CVE-2017-12883

NameCVE-2017-12883
DescriptionBuffer overflow in the S_grok_bslash_N 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 disclose sensitive information or cause a denial of service (application crash) via a crafted regular expression with an invalid '\N{U+...}' escape.
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)
ReferencesDSA-3982-1
NVD severitymedium
Debian Bugs875597

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
perl (PTS)jessie5.20.2-3+deb8u11fixed
jessie (security)5.20.2-3+deb8u12fixed
stretch (security), stretch5.24.1-3+deb9u5fixed
buster5.28.1-6fixed
bullseye, sid5.30.0-9fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
perlsource(unstable)5.26.0-8875597
perlsourcejessie5.20.2-3+deb8u9DSA-3982-1
perlsourcestretch5.24.1-3+deb9u2DSA-3982-1
perlsourcewheezy(not affected)

Notes

[wheezy] - perl <not-affected> (Vulnerable code introduced later)
https://rt.perl.org/Public/Bug/Display.html?id=131598 (not yet public)
https://perl5.git.perl.org/perl.git/commitdiff/2be4edede4ae226e2eebd4eff28cedd2041f300f
maint-5.26: https://perl5.git.perl.org/perl.git/commitdiff/2692dda97731c37082a0075eff50d741901c665f
maint-5.24: https://perl5.git.perl.org/perl.git/commitdiff/40b3cdad3649334585cee8f4630ec9a025e62be6

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