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CVE-2017-12883

9.1 · CRITICAL

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…

Published Sep 19, 2017CWE-119EPSS 5.91%

Overview

CVE-2017-12883 is a critical-severity vulnerability. It was published on September 19, 2017 and has a CVSS 3.0 base score of 9.1 (CRITICAL).

This vulnerability has a CVSS 3.0 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refmirror.cucumberlinux.com/cucumber/cucumber-1.0/source/lang-base/perl/patches/CVE-2017-12883.patchRefwww.debian.org/security/2017/dsa-3982Refwww.securityfocus.com/bid/100852Refbugzilla.redhat.com/show_bug.cgi?id=1492093Refperl5.git.perl.org/perl.git/commitdiff/2be4edede4ae226e2eebd4eff28cedd2041f300f#patch1Refperl5.git.perl.org/perl.git/log/refs/tags/v5.24.3-RC1Refperl5.git.perl.org/perl.git/log/refs/tags/v5.26.1-RC1Refrt.perl.org/Public/Bug/Display.html?id=131598Refsecurity.netapp.com/advisory/ntap-20180426-0001/Refwww.oracle.com/security-alerts/cpujul2020.html

How CyberStrike helps

Frequently asked questions

What is CVE-2017-12883?

CVE-2017-12883 is a critical-severity vulnerability. It was published on September 19, 2017 and has a CVSS 3.0 base score of 9.1 (CRITICAL).

How severe is CVE-2017-12883?

This vulnerability has a CVSS 3.0 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2017-12883?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2017-12883?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-12883 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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