DescriptionBIND 9.7.1 and 9.7.1-P1, when a recursive validating server has a trust anchor that is configured statically or via DNSSEC Lookaside Validation (DLV), allows remote attackers to cause a denial of service (infinite loop) via a query for an RRSIG record whose answer is not in the cache, which causes BIND to repeatedly send RRSIG queries to the authoritative servers.
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 severitylow (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
bind9 (PTS)wheezy1:9.8.4.dfsg.P1-6+nmu2+deb7u10fixed
wheezy (security)1:9.8.4.dfsg.P1-6+nmu2+deb7u20fixed
jessie (security)1:9.9.5.dfsg-9+deb8u15fixed
stretch (security), stretch1:9.10.3.dfsg.P4-12.3+deb9u4fixed
buster, sid1:9.11.2.P1-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
bind9sourcelenny(not affected)


[lenny] - bind9 <not-affected> (vulnerability introduced in 9.7.1)

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