CVE-2017-12883 Memory corruption in n/a

Critical 9.1 Published 19 Sep 2017 Updated 5 Aug 2024

Remote attackers can cause information disclosure or application crashes in Perl via a crafted regular expression with an invalid escape sequence.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2017-12883?

CVE-2017-12883 is a critical memory corruption vulnerability in n/a, published on 19 Sep 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-119

Which versions are affected by CVE-2017-12883?

It affects 1 product.

Products include Perl Perl.

How do I fix CVE-2017-12883?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2017-12883 being exploited?

There is no known exploitation of CVE-2017-12883 in the wild and no public exploit code.

Sources

Also known as ALPINE-CVE-2017-12883, CLEANSTART-2026-YO60841, DEBIAN-CVE-2017-12883, GHSA-h435-qr7v-xh34, UBUNTU-CVE-2017-12883.