High severity · published Sep 19, 2017
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…
7.5
CVSS
6.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)6.2% · higher than 93% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PE
Perl · Perl
through 5.24.2; 5.26.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-12837
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-12837
www.debian.org
http://www.debian.org/security/2017/dsa-3982
Third Party Advisory
http://www.securityfocus.com/bid/100860
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1492091
Patch
https://perl5.git.perl.org/perl.git/commitdiff/96c83ed78aeea1a0496dd2b2d935869a822dc8a5
Release Notes
https://perl5.git.perl.org/perl.git/log/refs/tags/v5.24.3-RC1
Release Notes
https://perl5.git.perl.org/perl.git/log/refs/tags/v5.26.1-RC1
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