CVE-2015-8853

MEDIUM

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

http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183592.html

http://perl5.git.perl.org/perl.git/commitdiff/22b433eff9a1ffa2454e18405a56650f07b385b5

http://www.openwall.com/lists/oss-security/2016/04/20/5

http://www.openwall.com/lists/oss-security/2016/04/20/7

http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html

http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html

http://www.securityfocus.com/bid/86707

https://bugzilla.redhat.com/show_bug.cgi?id=1329106

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731

https://rt.perl.org/Public/Bug/Display.html?id=123562

https://security.gentoo.org/glsa/201701-75

https://usn.ubuntu.com/3625-1/

https://usn.ubuntu.com/3625-2/

Details

Source: MITRE

Published: 2016-05-25

Updated: 2018-05-02

Type: CWE-20

Risk Information

CVSS v2.0

Base Score: 5

Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3.0

Base Score: 7.5

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

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH