CVE-2003-0955: openbsd
- 1 reference with an unsupported link type was hidden.
Vulnerability summary
CVE-2003-0955 is a medium (CVSS 4.6) vulnerability in openbsd. EPSS estimates a 1.14% chance of exploitation in the next 30 days, higher than 65.9% of scored vulnerabilities. 3 public exploits are recorded.
Advisory lineage
Upstream 0 · Downstream 0 · Duplicates 1Timeline
- 21-11-2003PublishedVulnerability first disclosed.
- 08-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
1.14%
Chance of exploitation in the next 30 days
Percentile
66%
Versus all other CVEs
30-day change
-0.01 pp
From 1.14% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
3 foundExploit Reference (guninski.com)
Maturity: unknown
OpenBSD - 'ibcs2_exec' Kernel Code Execution
Maturity: weaponized
OpenBSD 2.x < 3.3 - 'exec_ibcs2_coff_prep_zmagic()' kernel stack overflow
Maturity: weaponized
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Openbsd1 product
- openbsdEOL3.3 | 3.4
1 vendor · 1 product
References
6 links- marc.info?l=openbsd-security-announce&m=106917441524978&w=2X Refsource CONFIRM
- marc.info?l=openbsd-security-announce&m=106808820119679&w=2X Refsource CONFIRM
- lists.grok.org.uk/pipermail/full-disclosure/2003-November/013315.htmlMailing ListX Refsource FULLDISC