CVE-2017-12837
HIGH severity · CVSS 7.5 · Memory corruption
7.5CVSS HIGH
Summary
Heap-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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)6%
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://bugzilla.redhat.com/show_bug.cgi?id=1492091 ↗
Additional information
- NVD record
- https://bugzilla.redhat.com/show_bug.cgi?id=1492091Patch
- https://perl5.git.perl.org/perl.git/commitdiff/96c83ed78aeea1a0496dd2b2d935869a822dc8a5Patch
- https://perl5.git.perl.org/perl.git/log/refs/tags/v5.24.3-RC1Advisory
- https://perl5.git.perl.org/perl.git/log/refs/tags/v5.26.1-RC1Advisory
- http://www.debian.org/security/2017/dsa-3982
- http://www.securityfocus.com/bid/100860Advisory
- https://rt.perl.org/Public/Bug/Display.html?id=131582
- https://security.netapp.com/advisory/ntap-20180426-0001/