CVE-2003-0955

Severity: medium (CVSS 4.6 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2003-12-15 · updated 2026-06-16

Description

OpenBSD kernel 3.3 and 3.4 allows local users to cause a denial of service (kernel panic) and possibly execute arbitrary code in 3.4 via a program with an invalid header that is not properly handled by (1) ibcs2_exec.c in the iBCS2 emulation (compat_ibcs2) or (2) exec_elf.c, which leads to a stack-based buffer overflow.

Affected products

OpenBSD: 3.3, 3.4

References

http://lists.grok.org.uk/pipermail/full-disclosure/2003-November/013315.html
http://marc.info/?l=openbsd-security-announce&m=106808820119679&w=2
http://marc.info/?l=openbsd-security-announce&m=106917441524978&w=2
http://www.guninski.com/msuxobsd2.html
http://www.openbsd.org/errata33.html
http://www.securityfocus.com/bid/8978
http://lists.grok.org.uk/pipermail/full-disclosure/2003-November/013315.html
http://marc.info/?l=openbsd-security-announce&m=106808820119679&w=2
http://marc.info/?l=openbsd-security-announce&m=106917441524978&w=2
http://www.guninski.com/msuxobsd2.html

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