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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (6.21%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 6.21% probability · 93th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- perl/perl
- Source
- cve@mitre.org
References
- http://www.debian.org/security/2017/dsa-3982
- http://www.securityfocus.com/bid/100860Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1492091Issue Tracking, Patch, Third Party Advisory, VDB Entry
- https://perl5.git.perl.org/perl.git/commitdiff/96c83ed78aeea1a0496dd2b2d935869a822dc8a5Patch, Vendor Advisory
- https://perl5.git.perl.org/perl.git/log/refs/tags/v5.24.3-RC1Release Notes, Vendor Advisory
- https://perl5.git.perl.org/perl.git/log/refs/tags/v5.26.1-RC1Release Notes, Vendor Advisory
- 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/100860Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1492091Issue Tracking, Patch, Third Party Advisory, VDB Entry
- https://perl5.git.perl.org/perl.git/commitdiff/96c83ed78aeea1a0496dd2b2d935869a822dc8a5Patch, Vendor Advisory
- https://perl5.git.perl.org/perl.git/log/refs/tags/v5.24.3-RC1Release Notes, Vendor Advisory
- https://perl5.git.perl.org/perl.git/log/refs/tags/v5.26.1-RC1Release Notes, Vendor Advisory
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.