CVE-2016-7069

NameCVE-2016-7069
DescriptionAn issue has been found in dnsdist before 1.2.0 in the way EDNS0 OPT records are handled when parsing responses from a backend. When dnsdist is configured to add EDNS Client Subnet to a query, the response may contain an EDNS0 OPT record that has to be removed before forwarding the response to the initial client. On a 32-bit system, the pointer arithmetic used when parsing the received response to remove that record might trigger an undefined behavior leading to a crash.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
Debian Bugs872854

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
dnsdist (PTS)buster1.3.3-3fixed
bullseye1.5.1-3fixed
bookworm, sid1.7.2-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
dnsdistsourcestretch1.1.0-2+deb9u1
dnsdistsource(unstable)1.2.0-1low872854

Notes

https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2017-01.html
https://downloads.powerdns.com/patches/2017-01

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