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CVE-2019-19726
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…
High7.8EPSS 3.5%
- Published
- Updated
- Reserved
- Assigned by
- mitre
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
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 3.5% · top 11% of all CVEs (6 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
n/a
- affected n/a
References (9)
- https://www.openbsd.org/errata66.html (opens in a new tab)x_transferred
- https://www.openwall.com/lists/oss-security/2019/12/11/9 (opens in a new tab)x_transferred
- 20191212 Local Privilege Escalation in OpenBSD's dynamic loader (CVE-2019-19726) (opens in a new tab)mailing-listx_transferred
- http://packetstormsecurity.com/files/155658/Qualys-Security-Advisory-OpenBSD-Dynamic-Loader-Privilege-Escalation.html (opens in a new tab)x_transferred
- 20191213 Local Privilege Escalation in OpenBSD's dynamic loader (CVE-2019-19726) (opens in a new tab)mailing-listx_transferred
- http://packetstormsecurity.com/files/155764/OpenBSD-Dynamic-Loader-chpass-Privilege-Escalation.html (opens in a new tab)x_transferred
- [oss-security] 20231003 CVE-2023-4911: Local Privilege Escalation in the glibc's ld.so (opens in a new tab)mailing-listx_transferred
- 20231005 CVE-2023-4911: Local Privilege Escalation in the glibc's ld.so (opens in a new tab)mailing-listx_transferred
- http://packetstormsecurity.com/files/174986/glibc-ld.so-Local-Privilege-Escalation.html (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2019-19726)Record last updated .