ghsa-wj9q-g984-cx8g
Vulnerability from github
Published
2022-05-24 17:03
Modified
2023-01-30 21:30
Severity ?
Details
OpenBSD through 6.6 allows local users to escalate to root because a check for LD_LIBRARY_PATH in setuid programs can be defeated by setting a very small RLIMIT_DATA resource limit. When executing chpass or passwd (which are setuid root), _dl_setup_env in ld.so tries to strip LD_LIBRARY_PATH from the environment, but fails when it cannot allocate memory. Thus, the attacker is able to execute their own library code as root.
{ "affected": [], "aliases": [ "CVE-2019-19726" ], "database_specific": { "cwe_ids": [ "CWE-269" ], "github_reviewed": false, "github_reviewed_at": null, "nvd_published_at": "2019-12-12T01:15:00Z", "severity": "HIGH" }, "details": "OpenBSD through 6.6 allows local users to escalate to root because a check for LD_LIBRARY_PATH in setuid programs can be defeated by setting a very small RLIMIT_DATA resource limit. When executing chpass or passwd (which are setuid root), _dl_setup_env in ld.so tries to strip LD_LIBRARY_PATH from the environment, but fails when it cannot allocate memory. Thus, the attacker is able to execute their own library code as root.", "id": "GHSA-wj9q-g984-cx8g", "modified": "2023-01-30T21:30:22Z", "published": "2022-05-24T17:03:30Z", "references": [ { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-19726" }, { "type": "WEB", "url": "https://seclists.org/bugtraq/2019/Dec/25" }, { "type": "WEB", "url": "https://www.openbsd.org/errata66.html" }, { "type": "WEB", "url": "https://www.openwall.com/lists/oss-security/2019/12/11/9" }, { "type": "WEB", "url": "http://packetstormsecurity.com/files/155658/Qualys-Security-Advisory-OpenBSD-Dynamic-Loader-Privilege-Escalation.html" }, { "type": "WEB", "url": "http://packetstormsecurity.com/files/155764/OpenBSD-Dynamic-Loader-chpass-Privilege-Escalation.html" }, { "type": "WEB", "url": "http://packetstormsecurity.com/files/174986/glibc-ld.so-Local-Privilege-Escalation.html" }, { "type": "WEB", "url": "http://seclists.org/fulldisclosure/2019/Dec/31" }, { "type": "WEB", "url": "http://seclists.org/fulldisclosure/2023/Oct/11" }, { "type": "WEB", "url": "http://www.openwall.com/lists/oss-security/2023/10/03/2" } ], "schema_version": "1.4.0", "severity": [ { "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "type": "CVSS_V3" } ] }
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.