Vulnerability Report

CVE-2017-12837

Title: Perl Memory Corruption

Memory Corruption

Proof Of Concept

No public PoC currently indexed for CVE-2017-12837.

CWE Category CWE-119

Published Date Sep 19, 2017

Modified Date Jun 17, 2026

Exploit Status Not Found

Score 7.5 CVSS v3.0

Exploit Probability (EPSS)

6.21%

Vulnerability Summary

CVE-2017-12837: 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.

Impacted Vendors

perl 1

larry_wall 1

Reference Links

http://www.debian.org/security/2017/dsa-3982 http://www.securityfocus.com/bid/100860 https://bugzilla.redhat.com/show_bug.cgi?id=1492091 https://perl5.git.perl.org/perl.git/commitdiff/96c83ed78aeea1a0496dd2b2d935869a822dc8a5 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=131582 https://security.netapp.com/advisory/ntap-20180426-0001/ https://www.oracle.com/security-alerts/cpujul2020.html http://www.debian.org/security/2017/dsa-3982 http://www.securityfocus.com/bid/100860 https://bugzilla.redhat.com/show_bug.cgi?id=1492091 https://perl5.git.perl.org/perl.git/commitdiff/96c83ed78aeea1a0496dd2b2d935869a822dc8a5 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=131582 https://security.netapp.com/advisory/ntap-20180426-0001/ https://www.oracle.com/security-alerts/cpujul2020.html

CVSS v3.0

Source Entity [email protected]

Severity HIGH

7.5

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

5.0

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:L/Au:N/C:N/I:N/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns