mirror of
https://github.com/CVEProject/cvelist.git
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139 lines
5.5 KiB
JSON
139 lines
5.5 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-2023-2640",
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"ASSIGNER": "security@ubuntu.com",
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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": "On Ubuntu kernels carrying both c914c0e27eb0 and \"UBUNTU: SAUCE: overlayfs: Skip permission checking for trusted.overlayfs.* xattrs\", an unprivileged user may set privileged extended attributes on the mounted files, leading them to be set on the upper files without the appropriate security checks."
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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-863",
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"cweId": "CWE-863"
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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": "Canonical",
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"product": {
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"product_data": [
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{
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"product_name": "Ubuntu Kernel",
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"version": {
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"version_data": [
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{
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"version_value": "not down converted",
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"x_cve_json_5_version_data": {
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"versions": [
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{
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"status": "unaffected",
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"version": "0",
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"lessThan": "6.2.0-26.26",
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"versionType": "semver"
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},
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{
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"status": "unaffected",
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"version": "0",
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"lessThan": "6.0.0-1020.20",
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"versionType": "semver"
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},
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{
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"status": "unaffected",
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"version": "0",
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"lessThan": "5.4.0-155.172",
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"versionType": "semver"
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}
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],
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"defaultStatus": "unaffected"
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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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},
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"references": {
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"reference_data": [
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{
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"url": "https://ubuntu.com/security/notices/USN-6250-1",
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"refsource": "MISC",
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"name": "https://ubuntu.com/security/notices/USN-6250-1"
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},
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{
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"url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-2640",
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"refsource": "MISC",
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"name": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-2640"
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},
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{
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"url": "https://wiz.io/blog/ubuntu-overlayfs-vulnerability",
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"refsource": "MISC",
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"name": "https://wiz.io/blog/ubuntu-overlayfs-vulnerability"
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},
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{
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"url": "https://lists.ubuntu.com/archives/kernel-team/2023-July/140923.html",
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"refsource": "MISC",
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"name": "https://lists.ubuntu.com/archives/kernel-team/2023-July/140923.html"
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}
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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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"value": "If not needed, disable the ability for unprivileged users\nto create namespaces. To do this temporarily, do:\n sudo sysctl -w kernel.unprivileged_userns_clone=0\nTo disable across reboots, do:\n echo kernel.unprivileged_userns_clone=0 | \\\n sudo tee /etc/sysctl.d/99-disable-unpriv-userns.conf"
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}
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],
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"credits": [
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{
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"lang": "en",
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"value": "Stonejiajia"
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},
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{
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"lang": "en",
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"value": "Shir Tamari"
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},
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{
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"lang": "en",
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"value": "Sagi Tzadik"
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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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"version": "3.1",
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"attackVector": "LOCAL",
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"attackComplexity": "LOW",
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"privilegesRequired": "LOW",
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"userInteraction": "NONE",
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"scope": "UNCHANGED",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "HIGH",
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"availabilityImpact": "HIGH",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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}
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]
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}
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} |