DescriptionMultiple Integer underflows in the geonet_print function in tcpdump 4.5.0 through 4.6.2, when in verbose mode, allow remote attackers to cause a denial of service (segmentation fault and crash) via a crafted length value in a Geonet frame.
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 Bugs770415

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
tcpdump (PTS)stretch4.9.3-1~deb9u1fixed
stretch (security)4.9.3-1~deb9u2fixed
buster (security)4.9.3-1~deb10u1fixed
bullseye, sid4.99.0-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
tcpdumpsourcesqueeze(not affected)
tcpdumpsourcewheezy(not affected)


[wheezy] - tcpdump <not-affected> (Vulnerable code added in 4.5.0)
[squeeze] - tcpdump <not-affected> (Vulnerable code added in 4.5.0)

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