CVE-2015-7547

NameCVE-2015-7547
DescriptionMultiple stack-based buffer overflows in the (1) send_dg and (2) send_vc functions in the libresolv library in the GNU C Library (aka glibc or libc6) before 2.23 allow remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via a crafted DNS response that triggers a call to the getaddrinfo function with the AF_UNSPEC or AF_INET6 address family, related to performing "dual A/AAAA DNS queries" and the libnss_dns.so.2 NSS module.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-416-1, DSA-3480-1, DSA-3481-1
NVD severitymedium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
eglibc (PTS)wheezy2.13-38+deb7u10fixed
wheezy (security)2.13-38+deb7u11fixed
glibc (PTS)jessie2.19-18+deb8u9fixed
jessie (security)2.19-18+deb8u3fixed
stretch, sid2.24-10fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
eglibcsource(unstable)(unfixed)medium
eglibcsourcesqueeze2.11.3-4+deb6u11mediumDLA-416-1
eglibcsourcewheezy2.13-38+deb7u10mediumDSA-3480-1
glibcsource(unstable)2.21-8medium
glibcsourcejessie2.19-18+deb8u3mediumDSA-3481-1

Notes

https://googleonlinesecurity.blogspot.cz/2016/02/cve-2015-7547-glibc-getaddrinfo-stack.html
https://sourceware.org/ml/libc-alpha/2016-02/msg00416.html

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