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7.8

OpenBSD 4.1/4.2 can crash from malicious TCP packets

CVE-2008-1058 · published 18 years ago
Summary

The TCP handling code in OpenBSD versions 4.1 and 4.2 can be triggered to stop working by specially crafted network packets. An attacker who can send these packets could cause the system to halt, leading to a denial of service. Updating to a newer OpenBSD release or applying the provided patch will prevent the crash.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
openbsd openbsd 4.1
4.2
cpe:2.3:o:openbsd:openbsd:4.1:*:*:*:*:*:*:*
Original advisory text
The tcp_respond function in netinet/tcp_subr.c in OpenBSD 4.1 and 4.2 allows attackers to cause a denial of service (panic) via crafted TCP packets. NOTE: some of these details are obtained from t...
The tcp_respond function in netinet/tcp_subr.c in OpenBSD 4.1 and 4.2 allows attackers to cause a denial of service (panic) via crafted TCP packets. NOTE: some of these details are obtained from third party information.
References
Fix within
Internet-facing 14 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically (estimated)
  • Gives an attacker partial control (estimated)
Severity
7.8 High
Exploitation
2% chance of attack within 30 days
Timeline
Published28 Feb 2008
Updated4 Nov 2026
First seen29 Sep 2026
Sources
CVE-2008-1058 · NVD
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