High severity7.8NVD Advisory· Published Dec 12, 2019· Updated Jun 17, 2026
CVE-2019-19726
CVE-2019-19726
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3- OpenBSD/OpenBSDdescription
Patches
Vulnerability mechanics
References
9- www.openbsd.org/errata66.htmlnvdPatchVendor Advisory
- packetstormsecurity.com/files/155658/Qualys-Security-Advisory-OpenBSD-Dynamic-Loader-Privilege-Escalation.htmlnvdExploitThird Party AdvisoryVDB Entry
- seclists.org/fulldisclosure/2019/Dec/31nvdExploitMailing ListThird Party Advisory
- seclists.org/bugtraq/2019/Dec/25nvdExploitMailing ListThird Party Advisory
- packetstormsecurity.com/files/155764/OpenBSD-Dynamic-Loader-chpass-Privilege-Escalation.htmlnvdThird Party AdvisoryVDB Entry
- www.openwall.com/lists/oss-security/2019/12/11/9nvdMailing ListThird Party Advisory
- packetstormsecurity.com/files/174986/glibc-ld.so-Local-Privilege-Escalation.htmlnvd
- seclists.org/fulldisclosure/2023/Oct/11nvd
- www.openwall.com/lists/oss-security/2023/10/03/2nvd
News mentions
0No linked articles in our index yet.