CVE-2017-12837

NameCVE-2017-12837
DescriptionHeap-based buffer overflow in the S_regatom function in regcomp.c in Perl 5 before 5.24.3-RC1 and 5.26.x before 5.26.1-RC1 allows remote attackers to cause a denial of service (out-of-bounds write) via a regular expression with a '\N{}' escape and the case-insensitive modifier.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-3982-1
Debian Bugs875596

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
perl (PTS)buster5.28.1-6+deb10u1fixed
bullseye5.32.1-4+deb11u3fixed
bullseye (security)5.32.1-4+deb11u1fixed
bookworm5.36.0-7+deb12u1fixed
trixie5.38.2-3fixed
sid5.38.2-3.2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
perlsourcewheezy(not affected)
perlsourcejessie5.20.2-3+deb8u9DSA-3982-1
perlsourcestretch5.24.1-3+deb9u2DSA-3982-1
perlsource(unstable)5.26.0-8875596

Notes

[wheezy] - perl <not-affected> (Vulnerable code introduced after 5.14.4)
https://rt.perl.org/Public/Bug/Display.html?id=131582 (not yet public)
https://perl5.git.perl.org/perl.git/commitdiff/96c83ed78aeea1a0496dd2b2d935869a822dc8a5
maint-5.26: https://perl5.git.perl.org/perl.git/commitdiff/66288bb3f44c8aa5122e5f40d8cfc0eada8b1695
maint-5.24: https://perl5.git.perl.org/perl.git/commitdiff/f7e5417e7bffba03947b66e4d8622d7c220f2876

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