CVE-2019-19726
High
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.
SeverityHigh
CVSS7.8
Exploit probability—
ProductOpenbsd
PublishedDec 12, 2019
First seenDec 12, 2019
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| openbsd openbsd | v ≤ 6.6 | — |
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