CVE-2009-1959

NameCVE-2009-1959
DescriptionOff-by-one error in the event_wallops function in fe-common/irc/fe-events.c in irssi 0.8.13 allows remote IRC servers to cause a denial of service (crash) via an empty command, which triggers a one-byte buffer under-read and a one-byte buffer underflow.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium
Debian Bugs531357, 532607

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
irssi (PTS)stretch (security), stretch1.0.7-1~deb9u1fixed
buster1.2.0-2+deb10u1fixed
bookworm, sid, bullseye1.2.3-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
irssisourceetch0.8.10-3
irssisourcelenny0.8.12-7
irssisource(unstable)0.8.13-2low531357, 532607

Notes

exploitability limited, DoS rather obscure attack scenario

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