Description
The (1) S_reghop3, (2) S_reghop4, and (3) S_reghopmaybe3 functions in regexec.c in Perl before 5.24.0 allow context-dependent attackers to cause a denial of service (infinite loop) via crafted utf-8 data, as demonstrated by "a\x80."
References (13)
Core 13
Core References
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/201701-75
Mailing List mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2016/04/20/7
Vendor Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3625-2/
Mailing List mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2016/04/20/5
Various Sources x_refsource_confirm
https://rt.perl.org/Public/Bug/Display.html?id=123562
Vendor Advisory x_refsource_confirm
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
Vendor Advisory x_refsource_confirm
http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/86707
Issue Tracking x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=1329106
Vendor Advisory x_refsource_confirm
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731
Vendor Advisory x_refsource_confirm
http://perl5.git.perl.org/perl.git/commitdiff/22b433eff9a1ffa2454e18405a56650f07b385b5
Vendor Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3625-1/
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183592.html
Scores
CVSS v3
7.5
EPSS
0.0255
EPSS Percentile
83.2%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-20
Status
published
Products (2)
fedoraproject/fedora
22
perl/perl
< 5.23.9
Published
May 25, 2016
Tracked Since
Feb 18, 2026