Debian 10: DLA-3363-1 Moderate: Pcre2 Out-Of-Bounds Access Issues

debian lts

March 16, 2023

Multiple out-of-bounds read vulnerabilities were found in pcre2, a Perl Compatible Regular Expression library, which could result in information disclosure or denial or service

Topics Covered

security advisory moderate denial of service debian information disclosure out-of-bounds pcre2

Summary

CVE-2019-20454

Out-of-bounds read when the pattern \X is JIT compiled and used to
match specially crafted subjects in non-UTF mode.

CVE-2022-1586

Out-of-bounds read involving unicode property matching in
JIT-compiled regular expressions. The issue occurs because the
character was not fully read in case-less matching within JIT.

CVE-2022-1587

Out-of-bounds read affecting recursions in JIT-compiled regular
expressions caused by duplicate data transfers.

This upload also fixes a subject buffer overread in JIT when UTF is
disabled and \X or \R has a greater than 1 fixed quantifier. This issue
was found by Yunho Kim.

For Debian 10 buster, these problems have been fixed in version
10.32-5+deb10u1.

We recommend that you upgrade your pcre2 packages.

For the detailed security status of pcre2 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/pcre2

Further information about Debian LTS security advisories, how to apply