PT-2020-3692 · Perl+8 · Perl+8
Published
2020-06-01
·
Updated
2026-03-10
·
CVE-2020-12723
CVSS v3.1
7.5
High
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Perl versions prior to 5.30.3
Description
The issue is related to a buffer overflow in the
regcomp.c file due to recursive S study chunk calls when evaluating crafted regular expressions. This can lead to a denial of service. An application written in Perl is only vulnerable if it evaluates regular expressions supplied by an attacker, which is a known dangerous practice since the regular expression engine does not protect against such attacks.Recommendations
For versions prior to 5.30.3, update to version 5.30.3 or later to resolve the issue. As a temporary workaround, consider avoiding the evaluation of regular expressions supplied by attackers to minimize the risk of exploitation. Restricting the use of crafted regular expressions can also help mitigate the risk until a patch is applied.
Fix
DoS
Buffer Overflow
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Centos
Ibm Aix
Linuxmint
Perl
Red Hat
Red Os
Suse
Ubuntu