CVE-2017-12883

Description

Buffer overflow in the S_grok_bslash_N 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 disclose sensitive information or cause a denial of service (application crash) via a crafted regular expression with an invalid '\N{U+...}' escape.

Category

9.1
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 4.42% Top 15%
Vendor Advisory debian.org Vendor Advisory perl.org Vendor Advisory perl.org Vendor Advisory perl.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.debian.org/security/2017/dsa-3982 vendor advisory
http://www.securityfocus.com/bid/100852 vdb entry third party advisory
https://www.oracle.com/security-alerts/cpujul2020.html
https://perl5.git.perl.org/perl.git/log/refs/tags/v5.26.1-RC1 release notes vendor advisory
https://perl5.git.perl.org/perl.git/log/refs/tags/v5.24.3-RC1 release notes vendor advisory
https://security.netapp.com/advisory/ntap-20180426-0001/
http://mirror.cucumberlinux.com/cucumber/cucumber-1.0/source/lang-base/perl/patches/CVE-2017-12883.patch third party advisory patch
https://bugzilla.redhat.com/show_bug.cgi?id=1492093 issue tracking patch vdb entry third party advisory
https://rt.perl.org/Public/Bug/Display.html?id=131598
https://perl5.git.perl.org/perl.git/commitdiff/2be4edede4ae226e2eebd4eff28cedd2041f300f#patch1 patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2017-12883?
CVE-2017-12883 has been scored as a critical severity vulnerability.
How to fix CVE-2017-12883?
To fix CVE-2017-12883, 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-2017-12883 being actively exploited in the wild?
It is possible that CVE-2017-12883 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~4% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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