cvelistv5 - CVE-2019-19726

CVE-2019-19726

Vulnerability from cvelistv5

Published

2019-12-12 00:00

Modified

2024-08-05 02:25

Severity ?

Summary

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.

References

URL	Tags
cve@mitre.org	http://packetstormsecurity.com/files/155658/Qualys-Security-Advisory-OpenBSD-Dynamic-Loader-Privilege-Escalation.html	Exploit, Third Party Advisory, VDB Entry
cve@mitre.org	http://packetstormsecurity.com/files/155764/OpenBSD-Dynamic-Loader-chpass-Privilege-Escalation.html	Third Party Advisory, VDB Entry
cve@mitre.org	http://packetstormsecurity.com/files/174986/glibc-ld.so-Local-Privilege-Escalation.html
cve@mitre.org	http://seclists.org/fulldisclosure/2019/Dec/31	Exploit, Mailing List, Third Party Advisory
cve@mitre.org	http://seclists.org/fulldisclosure/2023/Oct/11
cve@mitre.org	http://www.openwall.com/lists/oss-security/2023/10/03/2
cve@mitre.org	https://seclists.org/bugtraq/2019/Dec/25	Exploit, Mailing List, Third Party Advisory
cve@mitre.org	https://www.openbsd.org/errata66.html	Patch, Vendor Advisory
cve@mitre.org	https://www.openwall.com/lists/oss-security/2019/12/11/9	Mailing List, Third Party Advisory

Impacted products

▼	Vendor	Product
	n/a	n/a

Show details on NVD website

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Sightings

Author	Source	Type	Date

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.

Action not permitted

CVE-2019-19726

Vulnerability from cvelistv5

gsd-2019-19726

Vulnerability from gsd

ghsa-wj9q-g984-cx8g

Vulnerability from github

Tags

Sightings

Nomenclature