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…

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.

Scores

EPSS (exploitation in 30 days)

1.1% · top 33% of all CVEs (4 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.6.

Weakness

• n/a

Affected products

• n/a

  • affected n/a

References (6)

• 20031104 010: RELIABILITY FIX: November 4, 2003 (opens in a new tab)vendor-advisoryx_refsource_OPENBSDx_transferred
• http://marc.info/?l=openbsd-security-announce&m=106917441524978&w=2 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 8978 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• http://marc.info/?l=openbsd-security-announce&m=106808820119679&w=2 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 20031104 OpenBSD kernel overflow, yet still *BSD much better than windows (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
• http://www.guninski.com/msuxobsd2.html (opens in a new tab)x_refsource_MISCx_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)

Badge for a README or a ticket

[![CVE-2003-0955](https://trackcve.app/badge/CVE-2003-0955.svg)](https://trackcve.app/cve/CVE-2003-0955)

Record last updated 8 Aug 2024, 02:12 UTC.