CVE-2017-12837

Description

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.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 2.23% Top 20%
Vendor Advisory debian.org Vendor Advisory perl.org Vendor Advisory perl.org Vendor Advisory perl.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.debian.org/security/2017/dsa-3982 vendor advisory
http://www.securityfocus.com/bid/100860 vdb entry third party advisory
https://www.oracle.com/security-alerts/cpujul2020.html
https://perl5.git.perl.org/perl.git/log/refs/tags/v5.26.1-RC1 release notes vendor advisory
https://perl5.git.perl.org/perl.git/log/refs/tags/v5.24.3-RC1 release notes vendor advisory
https://security.netapp.com/advisory/ntap-20180426-0001/
https://bugzilla.redhat.com/show_bug.cgi?id=1492091 issue tracking patch vdb entry third party advisory
https://rt.perl.org/Public/Bug/Display.html?id=131582
https://perl5.git.perl.org/perl.git/commitdiff/96c83ed78aeea1a0496dd2b2d935869a822dc8a5 patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2017-12837?
CVE-2017-12837 has been scored as a high severity vulnerability.
How to fix CVE-2017-12837?
To fix CVE-2017-12837, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-12837 being actively exploited in the wild?
It is possible that CVE-2017-12837 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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