mirror of
https://github.com/CVEProject/cvelist.git
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255 lines
15 KiB
JSON
255 lines
15 KiB
JSON
{
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"data_version": "4.0",
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"data_type": "CVE",
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"data_format": "MITRE",
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"CVE_data_meta": {
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"ID": "CVE-2023-44186",
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"ASSIGNER": "sirt@juniper.net",
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"STATE": "PUBLIC"
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},
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"description": {
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"description_data": [
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{
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"lang": "eng",
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"value": "\nAn Improper Handling of Exceptional Conditions vulnerability in AS PATH processing of Juniper Networks Junos OS and Junos OS Evolved allows an attacker to send a BGP update message with an AS PATH containing a large number of 4-byte ASes, leading to a Denial of Service (DoS). Continued receipt and processing of these BGP updates will create a sustained Denial of Service (DoS) condition.\n\nThis issue is hit when the router has Non-Stop Routing (NSR) enabled, has a non-4-byte-AS capable BGP neighbor, receives a BGP update message with a prefix that includes a long AS PATH containing large number of 4-byte ASes, and has to advertise the prefix towards the non-4-byte-AS capable BGP neighbor.\n\nNote: NSR is not supported on the SRX Series and is therefore not affected by this vulnerability.\nThis issue affects:\n\nJuniper Networks Junos OS:\n\n\n\n * All versions prior to 20.4R3-S8;\n * 21.1 versions 21.1R1 and later;\n * 21.2 versions prior to 21.2R3-S6;\n * 21.3 versions prior to 21.3R3-S5;\n * 21.4 versions prior to 21.4R3-S5;\n * 22.1 versions prior to 22.1R3-S4;\n * 22.2 versions prior to 22.2R3-S2;\n * 22.3 versions prior to 22.3R2-S2, 22.3R3-S1;\n * 22.4 versions prior to 22.4R2-S1, 22.4R3;\n * 23.2 versions prior to 23.2R2.\n\n\n\n\nJuniper Networks Junos OS Evolved\n\n\n\n * All versions prior to 20.4R3-S8-EVO;\n * 21.1 versions 21.1R1-EVO and later;\n * 21.2 versions prior to 21.2R3-S6-EVO;\n * 21.3 versions prior to 21.3R3-S5-EVO;\n * 21.4 versions prior to 21.4R3-S5-EVO;\n * 22.1 versions prior to 22.1R3-S4-EVO;\n * 22.2 versions prior to 22.2R3-S2-EVO;\n * 22.3 versions prior to 22.3R2-S2-EVO, 22.3R3-S1-EVO;\n * 22.4 versions prior to 22.4R2-S1-EVO, 22.4R3-EVO;\n * 23.2 versions prior to 23.2R2-EVO.\n\n\n\n\n\n\n"
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}
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]
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},
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"problemtype": {
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"problemtype_data": [
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{
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"description": [
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{
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"lang": "eng",
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"value": "CWE-755 Improper Handling of Exceptional Conditions",
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"cweId": "CWE-755"
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}
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]
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},
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{
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"description": [
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{
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"lang": "eng",
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"value": "Denial of Service (DoS)"
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}
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]
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}
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]
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},
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"affects": {
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"vendor": {
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"vendor_data": [
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{
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"vendor_name": "Juniper Networks",
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"product": {
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"product_data": [
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{
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"product_name": "Junos OS",
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"version": {
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"version_data": [
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{
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"version_affected": "<",
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"version_name": "0",
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"version_value": "20.4R3-S8"
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},
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{
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"version_affected": "<",
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"version_name": "21.1R1",
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"version_value": "21.1*"
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},
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{
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"version_affected": "<",
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"version_name": "21.2",
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"version_value": "21.2R3-S6"
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},
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{
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"version_affected": "<",
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"version_name": "21.3",
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"version_value": "21.3R3-S5"
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},
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{
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"version_affected": "<",
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"version_name": "21.4",
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"version_value": "21.4R3-S5"
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},
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{
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"version_affected": "<",
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"version_name": "22.1",
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"version_value": "22.1R3-S4"
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},
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{
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"version_affected": "<",
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"version_name": "22.2",
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"version_value": "22.2R3-S2"
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},
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{
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"version_affected": "<",
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"version_name": "22.3",
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"version_value": "22.3R2-S2, 22.3R3-S1"
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},
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{
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"version_affected": "<",
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"version_name": "22.4",
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"version_value": "22.4R2-S1, 22.4R3"
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},
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{
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"version_affected": "<",
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"version_name": "23.2",
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"version_value": "23.2R2"
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}
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]
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}
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},
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{
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"product_name": "Junos OS Evolved",
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"version": {
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"version_data": [
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{
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"version_affected": "<",
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"version_name": "0",
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"version_value": "20.4R3-S8-EVO"
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},
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{
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"version_affected": "<",
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"version_name": "21.1",
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"version_value": "21.1*-EVO"
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},
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{
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"version_affected": "<",
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"version_name": "21.2",
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"version_value": "21.2R3-S6-EVO"
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},
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{
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"version_affected": "<",
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"version_name": "21.3",
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"version_value": "21.3R3-S5-EVO"
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},
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{
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"version_affected": "<",
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"version_name": "21.4",
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"version_value": "21.4R3-S5-EVO"
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},
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{
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"version_affected": "<",
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"version_name": "22.1",
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"version_value": "22.1R3-S4-EVO"
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},
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{
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"version_affected": "<",
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"version_name": "22.2",
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"version_value": "22.2R3-S2-EVO"
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},
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{
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"version_affected": "<",
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"version_name": "22.3",
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"version_value": "22.3R2-S2-EVO, 22.3R3-S1-EVO"
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},
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{
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"version_affected": "<",
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"version_name": "22.4",
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"version_value": "22.4R2-S1-EVO, 22.4R3-EVO"
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},
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{
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"version_affected": "<",
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"version_name": "23.2",
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"version_value": "23.2R2-EVO"
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}
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]
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}
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}
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]
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}
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}
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]
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}
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},
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"references": {
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"reference_data": [
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{
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"url": "https://supportportal.juniper.net/JSA73150",
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"refsource": "MISC",
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"name": "https://supportportal.juniper.net/JSA73150"
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}
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]
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},
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"generator": {
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"engine": "Vulnogram 0.1.0-av217"
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},
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"source": {
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"advisory": "JSA73150",
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"defect": [
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"1736029"
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],
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"discovery": "EXTERNAL"
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},
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"configuration": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<p>Nonstop Active Routing is enabled using the following configuration:</p> <tt>[edit chassis redundancy]<br></tt><tt>graceful-switchover;<br></tt><tt><br>[edit routing-options]<br></tt><tt>nonstop-routing;</tt>"
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}
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],
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"value": "Nonstop Active Routing is enabled using the following configuration:\n\n [edit chassis redundancy]\ngraceful-switchover;\n\n[edit routing-options]\nnonstop-routing;"
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}
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],
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"work_around": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<p>Current operational and security best practices, such as limiting the AS PATH length, should mitigate risk of this issue.</p><p>Below is an example configuration to limit AS PATH to 30 entries:</p> <tt>set groups BASE-POLICY policy-options policy-statement MaxAS-Limit-30 term more-than-30 from protocol bgp<br></tt><tt>set groups BASE-POLICY policy-options policy-statement MaxAS-Limit-30 term more-than-30 from as-path 31as<br></tt><tt>set groups BASE-POLICY policy-options policy-statement MaxAS-Limit-30 term more-than-30 then reject<br></tt><tt>set groups BASE-POLICY policy-options policy-statement MaxAS-Limit-30 then accept<br></tt><tt>set groups BASE-POLICY policy-options policy-statement Customer-IN term MaxAS-Limit from policy MaxAS-Limit-30<br></tt><tt>set groups BASE-BGP protocols bgp group <*-CUSTOMER> import Customer-IN<br></tt><tt>set groups BASE-PREFIX-LISTS policy-options as-path 31as \".{31,}\"</tt>"
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}
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],
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"value": "Current operational and security best practices, such as limiting the AS PATH length, should mitigate risk of this issue.\n\nBelow is an example configuration to limit AS PATH to 30 entries:\n\n set groups BASE-POLICY policy-options policy-statement MaxAS-Limit-30 term more-than-30 from protocol bgp\nset groups BASE-POLICY policy-options policy-statement MaxAS-Limit-30 term more-than-30 from as-path 31as\nset groups BASE-POLICY policy-options policy-statement MaxAS-Limit-30 term more-than-30 then reject\nset groups BASE-POLICY policy-options policy-statement MaxAS-Limit-30 then accept\nset groups BASE-POLICY policy-options policy-statement Customer-IN term MaxAS-Limit from policy MaxAS-Limit-30\nset groups BASE-BGP protocols bgp group <*-CUSTOMER> import Customer-IN\nset groups BASE-PREFIX-LISTS policy-options as-path 31as \".{31,}\""
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}
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],
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"exploit": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<p>Juniper SIRT is not aware of any malicious exploitation of this vulnerability.</p>"
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}
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],
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"value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability.\n\n"
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}
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],
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"solution": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<p>The following software releases have been updated to resolve this specific issue: </p><p>Junos OS: 20.4R3-S8, 21.2R3-S6, 21.3R3-S5, 21.4R3-S5, 22.1R3-S4, 22.2R3-S2, 22.3R2-S2, 22.3R3-S1, 22.4R2-S1, 22.4R3, 23.2R2, 23.3R1, and all subsequent releases.</p><p>Junos OS Evolved: 20.4R3-S8-EVO, 21.2R3-S6-EVO, 21.3R3-S5-EVO, 21.4R3-S5-EVO, 22.1R3-S4-EVO, 22.2R3-S2-EVO, 22.3R2-S2-EVO, 22.3R3-S1-EVO, 22.4R2-S1-EVO, 22.4R3-EVO, 23.2R2-EVO, 23.3R1-EVO, and all subsequent releases.</p>"
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}
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],
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"value": "The following software releases have been updated to resolve this specific issue: \n\nJunos OS: 20.4R3-S8, 21.2R3-S6, 21.3R3-S5, 21.4R3-S5, 22.1R3-S4, 22.2R3-S2, 22.3R2-S2, 22.3R3-S1, 22.4R2-S1, 22.4R3, 23.2R2, 23.3R1, and all subsequent releases.\n\nJunos OS Evolved: 20.4R3-S8-EVO, 21.2R3-S6-EVO, 21.3R3-S5-EVO, 21.4R3-S5-EVO, 22.1R3-S4-EVO, 22.2R3-S2-EVO, 22.3R2-S2-EVO, 22.3R3-S1-EVO, 22.4R2-S1-EVO, 22.4R3-EVO, 23.2R2-EVO, 23.3R1-EVO, and all subsequent releases.\n\n"
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}
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],
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"impact": {
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"cvss": [
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{
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "HIGH",
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"baseScore": 7.5,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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"version": "3.1"
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}
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]
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}
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} |