CVE-2018-16855

NameCVE-2018-16855
DescriptionAn issue has been found in PowerDNS Recursor before version 4.1.8 where a remote attacker sending a DNS query can trigger an out-of-bounds memory read while computing the hash of the query for a packet cache lookup, possibly leading to a crash.
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)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
pdns-recursor (PTS)jessie3.6.2-2+deb8u4fixed
jessie (security)3.6.2-2+deb8u3fixed
stretch (security), stretch4.0.4-1+deb9u3fixed
buster, sid4.1.8-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
pdns-recursorsource(unstable)4.1.8-1
pdns-recursorsourcejessie(not affected)
pdns-recursorsourcestretch(not affected)

Notes

[stretch] - pdns-recursor <not-affected> (Only affects 4.1.x)
[jessie] - pdns-recursor <not-affected> (Only affects 4.1.x)
https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2018-09.html

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