CVE-2011-0997

NameCVE-2011-0997
Descriptiondhclient in ISC DHCP 3.0.x through 4.2.x before 4.2.1-P1, 3.1-ESV before 3.1-ESV-R1, and 4.1-ESV before 4.1-ESV-R2 allows remote attackers to execute arbitrary commands via shell metacharacters in a hostname obtained from a DHCP message, as demonstrated by a hostname that is provided to dhclient-script.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-2216-1, DSA-2217-1
Debian Bugs621099

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
isc-dhcp (PTS)bullseye4.4.1-2.3+deb11u2fixed
bullseye (security)4.4.1-2.3+deb11u1fixed
bookworm4.4.3-P1-2fixed
sid, trixie4.4.3-P1-5fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
dhcp3sourcelenny3.1.1-6+lenny5DSA-2217-1
dhcp3source(unstable)(unfixed)
isc-dhcpsourcesqueeze4.1.1-P1-15+squeeze2DSA-2216-1
isc-dhcpsource(unstable)4.1.1-P1-16.1621099

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