CVE-2019-19726
- State
- Published
- Severity
- Not scored
- Published
- Dec 12, 2019
- Updated
- Aug 5, 2024
- Reserved
- Dec 11, 2019
Description
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.
Scores
The record has no CVSS score.
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
n/an/a |
|
References
- https://www.openbsd.org/errata66.html
- https://www.openwall.com/lists/oss-security/2019/12/11/9
- 20191212 Local Privilege Escalation in OpenBSD's dynamic loader (CVE-2019-19726)mailing-list
- http://packetstormsecurity.com/files/155658/Qualys-Security-Advisory-OpenBSD-Dynamic-Loader-Privilege-Escalation.html
- 20191213 Local Privilege Escalation in OpenBSD's dynamic loader (CVE-2019-19726)mailing-list
- http://packetstormsecurity.com/files/155764/OpenBSD-Dynamic-Loader-chpass-Privilege-Escalation.html
- [oss-security] 20231003 CVE-2023-4911: Local Privilege Escalation in the glibc's ld.somailing-list
- 20231005 CVE-2023-4911: Local Privilege Escalation in the glibc's ld.somailing-list
- http://packetstormsecurity.com/files/174986/glibc-ld.so-Local-Privilege-Escalation.html
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