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98 lines
3.0 KiB
JSON
98 lines
3.0 KiB
JSON
{
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"id": "CVE-2023-29383",
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"sourceIdentifier": "cve@mitre.org",
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"published": "2023-04-14T22:15:07.680",
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"lastModified": "2023-04-24T18:05:30.313",
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"vulnStatus": "Analyzed",
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"descriptions": [
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{
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"lang": "en",
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"value": "In Shadow 4.13, it is possible to inject control characters into fields provided to the SUID program chfn (change finger). Although it is not possible to exploit this directly (e.g., adding a new user fails because \\n is in the block list), it is possible to misrepresent the /etc/passwd file when viewed. Use of \\r manipulations and Unicode characters to work around blocking of the : character make it possible to give the impression that a new user has been added. In other words, an adversary may be able to convince a system administrator to take the system offline (an indirect, social-engineered denial of service) by demonstrating that \"cat /etc/passwd\" shows a rogue user account."
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}
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],
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"metrics": {
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"cvssMetricV31": [
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{
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"source": "nvd@nist.gov",
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"type": "Primary",
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"cvssData": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
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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": "NONE",
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"integrityImpact": "LOW",
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"availabilityImpact": "NONE",
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"baseScore": 3.3,
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"baseSeverity": "LOW"
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},
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"exploitabilityScore": 1.8,
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"impactScore": 1.4
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}
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]
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},
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"weaknesses": [
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{
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"source": "nvd@nist.gov",
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"type": "Primary",
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"description": [
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{
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"lang": "en",
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"value": "CWE-74"
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}
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]
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}
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],
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"configurations": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:a:shadow_project:shadow:4.13:*:*:*:*:*:*:*",
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"matchCriteriaId": "79B0C1D0-9CF5-451D-B3B3-750B64FD7575"
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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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{
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"url": "https://github.com/shadow-maint/shadow/commit/e5905c4b84d4fb90aefcd96ee618411ebfac663d",
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"source": "cve@mitre.org",
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"tags": [
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"Patch"
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]
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},
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{
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"url": "https://github.com/shadow-maint/shadow/pull/687",
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"source": "cve@mitre.org",
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"tags": [
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"Issue Tracking"
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]
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},
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{
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"url": "https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/cve-2023-29383-abusing-linux-chfn-to-misrepresent-etc-passwd/",
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"source": "cve@mitre.org",
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"tags": [
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"Exploit",
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"Third Party Advisory"
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]
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},
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{
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"url": "https://www.trustwave.com/en-us/resources/security-resources/security-advisories/?fid=31797",
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"source": "cve@mitre.org",
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"tags": [
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"Exploit",
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"Third Party Advisory"
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]
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}
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]
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} |