DescriptionAn issue was discovered in Tor before, 0.3.1.x before, and 0.3.2.x before The directory-authority protocol-list subprotocol implementation allows remote attackers to cause a denial of service (NULL pointer dereference and directory-authority crash) via a misformatted relay descriptor that is mishandled during voting.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
tor (PTS)buster0.3.5.16-1fixed
buster (security)
bullseye (security), bullseye0.4.5.16-1fixed
bookworm, bookworm (security)
sid, trixie0.4.8.12-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
torsourcewheezy(not affected)
torsourcejessie(not affected)


[jessie] - tor <not-affected> (Vulnerable code introduced after tor-
[wheezy] - tor <not-affected> (Vulnerable code introduced after tor-

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