| Name | CVE-2017-12883 |
| Description | Buffer 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more) |
| References | DSA-3982-1 |
| NVD severity | medium (attack range: remote) |
| Debian Bugs | 875597 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| perl (PTS) | jessie | 5.20.2-3+deb8u11 | fixed |
| jessie (security) | 5.20.2-3+deb8u12 | fixed | |
| stretch (security), stretch | 5.24.1-3+deb9u5 | fixed | |
| bullseye, sid, buster | 5.28.1-6 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| perl | source | (unstable) | 5.26.0-8 | medium | 875597 | |
| perl | source | jessie | 5.20.2-3+deb8u9 | medium | DSA-3982-1 | |
| perl | source | stretch | 5.24.1-3+deb9u2 | medium | DSA-3982-1 | |
| perl | source | wheezy | (not affected) |
[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