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32 lines
1.6 KiB
JSON
32 lines
1.6 KiB
JSON
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{
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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": "2023-04-14T22:45:15.923",
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"vulnStatus": "Awaiting Analysis",
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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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"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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},
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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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},
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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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},
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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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}
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]
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}
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