CVE-2017-12837 Memory corruption in n/a
Remote attackers can cause denial of service via a heap-based buffer overflow in Perl's regex engine using specific escape sequences.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-12837?
CVE-2017-12837 is a high-severity 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
Heap-based buffer overflow in the S_regatom 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 cause a denial of service (out-of-bounds write) via a regular expression with a '\N{}' escape and the case-insensitive modifier.
Weakness: CWE-119
Which versions are affected by CVE-2017-12837?
It affects 1 product.
Products include Perl Perl.
How do I fix CVE-2017-12837?
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-2017-12837 being exploited?
There is no known exploitation of CVE-2017-12837 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as ALPINE-CVE-2017-12837, CLEANSTART-2026-NC70376, DEBIAN-CVE-2017-12837, GHSA-q52c-c9hv-jc77, UBUNTU-CVE-2017-12837.