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CVE-2015-8853

Published: 25 May 2016

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."

Priority

Low

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
perl
Launchpad, Ubuntu, Debian
artful Not vulnerable
(5.22.1-9)
precise Ignored
(end of life)
trusty
Released (5.18.2-2ubuntu1.4)
upstream
Released (5.22.1-1)
wily Ignored
(end of life)
xenial Not vulnerable
(5.22.1-9)
yakkety Not vulnerable
(5.22.1-9)
zesty Not vulnerable
(5.22.1-9)
Patches:
upstream: https://perl5.git.perl.org/perl.git/commit/22b433eff9a1ffa2454e18405a56650f07b385b5
upstream: https://perl5.git.perl.org/perl.git/commit/d820a0ff34c7df39297a54193fd756bb42c5c06e

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H