CVE-2017-7244

NameCVE-2017-7244
DescriptionThe _pcre32_xclass function in pcre_xclass.c in libpcre1 in PCRE 8.40 allows remote attackers to cause a denial of service (invalid memory read) via a crafted file.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium (attack range: remote)
Debian Bugs858683

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
pcre3 (PTS)wheezy1:8.30-5fixed
jessie2:8.35-3.3+deb8u4vulnerable
stretch2:8.39-3fixed
buster2:8.39-4fixed
sid2:8.39-5fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
pcre3source(unstable)2:8.39-3medium858683
pcre3sourcewheezy(not affected)

Notes

[jessie] - pcre3 <no-dsa> (Minor issue; 32bit character support not enabled)
[wheezy] - pcre3 <not-affected> (Vulnerable code not present)
https://bugs.exim.org/show_bug.cgi?id=2054
https://blogs.gentoo.org/ago/2017/03/20/libpcre-invalid-memory-read-in-_pcre32_xclass-pcre_xclass-c/
pcre32 support enabled only in pcre3/1:8.35-4
Bisected and the following change addresses the issue for pcre3:
http://vcs.pcre.org/pcre?view=revision&revision=1688 (8.41)

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