CVE-2015-8853

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."

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 10.53% Top 10%
Vendor Advisory gentoo.org Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory fedoraproject.org Vendor Advisory perl.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://security.gentoo.org/glsa/201701-75 vendor advisory
http://www.openwall.com/lists/oss-security/2016/04/20/7 mailing list
https://usn.ubuntu.com/3625-2/ vendor advisory
http://www.openwall.com/lists/oss-security/2016/04/20/5 mailing list
https://rt.perl.org/Public/Bug/Display.html?id=123562
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 vdb entry
https://bugzilla.redhat.com/show_bug.cgi?id=1329106
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731
http://perl5.git.perl.org/perl.git/commitdiff/22b433eff9a1ffa2454e18405a56650f07b385b5 vendor advisory
https://usn.ubuntu.com/3625-1/ vendor advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183592.html vendor advisory

Frequently Asked Questions

What is the severity of CVE-2015-8853?
CVE-2015-8853 has been scored as a high severity vulnerability.
How to fix CVE-2015-8853?
To fix CVE-2015-8853, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2015-8853 being actively exploited in the wild?
It is possible that CVE-2015-8853 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~11% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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