mirror of
https://github.com/CVEProject/cvelist.git
synced 2025-08-04 08:44:25 +00:00
130 lines
4.8 KiB
JSON
130 lines
4.8 KiB
JSON
{
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"CVE_data_meta": {
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"ASSIGNER": "security@ubuntu.com",
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"DATE_PUBLIC": "2021-04-15T00:00:00.000Z",
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"ID": "CVE-2021-3493",
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"STATE": "PUBLIC"
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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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"product": {
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"product_data": [
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{
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"product_name": "linux kernel",
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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": "5.8 kernel",
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"version_value": "5.8.0-50.56 "
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},
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{
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"version_affected": "<",
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"version_name": "5.4 kernel",
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"version_value": " 5.4.0-72.80 "
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},
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{
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"version_affected": "<",
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"version_name": "4.15 kernel",
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"version_value": "4.15.0-142.146 "
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},
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{
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"version_affected": "<",
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"version_name": "4.4 kernel",
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"version_value": " 4.4.0-209.241"
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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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"vendor_name": "Ubuntu"
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}
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]
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}
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},
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"credit": [
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{
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"lang": "eng",
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"value": "An independent security researcher reporting to the SSD Secure Disclosure program"
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}
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],
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"data_format": "MITRE",
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"data_type": "CVE",
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"data_version": "4.0",
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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": "The overlayfs implementation in the linux kernel did not properly validate with respect to user namespaces the setting of file capabilities on files in an underlying file system. Due to the combination of unprivileged user namespaces along with a patch carried in the Ubuntu kernel to allow unprivileged overlay mounts, an attacker could use this to gain elevated privileges."
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}
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]
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},
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"generator": {
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"engine": "Vulnogram 0.0.9"
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},
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"impact": {
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"cvss": {
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"attackComplexity": "LOW",
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"attackVector": "LOCAL",
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"availabilityImpact": "HIGH",
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"baseScore": 8.8,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "HIGH",
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"privilegesRequired": "LOW",
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"scope": "CHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
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"version": "3.1"
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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-270: Privilege Context Switching Error"
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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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"refsource": "MISC",
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"url": "https://ubuntu.com/security/notices/USN-4917-1",
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"name": "https://ubuntu.com/security/notices/USN-4917-1"
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},
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{
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"refsource": "MISC",
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"url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7c03e2cda4a584cadc398e8f6641ca9988a39d52",
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"name": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7c03e2cda4a584cadc398e8f6641ca9988a39d52"
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},
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{
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"refsource": "MISC",
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"url": "https://www.openwall.com/lists/oss-security/2021/04/16/1",
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"name": "https://www.openwall.com/lists/oss-security/2021/04/16/1"
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}
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]
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},
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"solution": [
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{
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"lang": "eng",
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"value": "Apply https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7c03e2cda4a584cadc398e8f6641ca9988a39d52"
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}
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],
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"source": {
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"discovery": "EXTERNAL"
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},
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"work_around": [
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{
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"lang": "eng",
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"value": "Disable unprivileged user namespaces."
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}
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]
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} |