CVE-2017-12883

Severity: critical (CVSS 9.1 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-09-19 · updated 2026-06-17
Weakness: CWE-119

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.

Affected products

perl: through 5.24.2; 5.26.0

References

http://mirror.cucumberlinux.com/cucumber/cucumber-1.0/source/lang-base/perl/patches/CVE-2017-12883.patch
http://www.debian.org/security/2017/dsa-3982
http://www.securityfocus.com/bid/100852
https://bugzilla.redhat.com/show_bug.cgi?id=1492093
https://perl5.git.perl.org/perl.git/commitdiff/2be4edede4ae226e2eebd4eff28cedd2041f300f#patch1
https://perl5.git.perl.org/perl.git/log/refs/tags/v5.24.3-RC1
https://perl5.git.perl.org/perl.git/log/refs/tags/v5.26.1-RC1
https://rt.perl.org/Public/Bug/Display.html?id=131598
https://security.netapp.com/advisory/ntap-20180426-0001/
https://www.oracle.com/security-alerts/cpujul2020.html
http://mirror.cucumberlinux.com/cucumber/cucumber-1.0/source/lang-base/perl/patches/CVE-2017-12883.patch
http://www.debian.org/security/2017/dsa-3982

Get alerted when CVE-2017-12883 or the next vulnerability affects your stack