CVE-2019-19726

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Summary

CVECVE-2019-19726
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-12-12 01:15:00 UTC
Updated2023-10-06 17:15:00 UTC
DescriptionOpenBSD 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.

Risk And Classification

Problem Types: CWE-269

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Openbsd Openbsd All All All All

References

ReferenceSourceLinkTags
OpenBSD 6.6 Errata CONFIRM www.openbsd.org Patch, Vendor Advisory
Full Disclosure: CVE-2023-4911: Local Privilege Escalation in the glibc's ld.so FULLDISC seclists.org
Bugtraq: Local Privilege Escalation in OpenBSD's dynamic loader (CVE-2019-19726) BUGTRAQ seclists.org Exploit, Mailing List, Third Party Advisory
glibc ld.so Local Privilege Escalation ≈ Packet Storm MISC packetstormsecurity.com
oss-security - CVE-2023-4911: Local Privilege Escalation in the glibc's ld.so MLIST www.openwall.com
OpenBSD Dynamic Loader chpass Privilege Escalation ≈ Packet Storm MISC packetstormsecurity.com
Qualys Security Advisory - OpenBSD Dynamic Loader Privilege Escalation ≈ Packet Storm MISC packetstormsecurity.com Exploit, Third Party Advisory, VDB Entry
Full Disclosure: Local Privilege Escalation in OpenBSD's dynamic loader (CVE-2019-19726) FULLDISC seclists.org Exploit, Third Party Advisory
oss-security - Local Privilege Escalation in OpenBSD's dynamic loader (CVE-2019-19726) MISC www.openwall.com Mailing List, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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