Vulnerability Details CVE-2019-20454
An out-of-bounds read was discovered in PCRE before 10.34 when the pattern \X is JIT compiled and used to match specially crafted subjects in non-UTF mode. Applications that use PCRE to parse untrusted input may be vulnerable to this flaw, which would allow an attacker to crash the application. The flaw occurs in do_extuni_no_utf in pcre2_jit_compile.c.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 24.0%
CVSS Severity
CVSS v3 Score 5.1
CVSS v2 Score 5.0
References
- https://bugs.exim.org/show_bug.cgi?id=2421
- https://bugs.php.net/bug.php?id=78338
- https://bugzilla.redhat.com/show_bug.cgi?id=1735494
- https://lists.debian.org/debian-lts-announce/2023/03/msg00014.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OQRAHYHLRNMBTPR3KXVM27NSZP3KTOPI/
- https://security.gentoo.org/glsa/202006-16
- https://vcs.pcre.org/pcre2?view=revision&revision=1092
- https://bugs.exim.org/show_bug.cgi?id=2421
- https://bugs.php.net/bug.php?id=78338
- https://bugzilla.redhat.com/show_bug.cgi?id=1735494
- https://lists.debian.org/debian-lts-announce/2023/03/msg00014.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OQRAHYHLRNMBTPR3KXVM27NSZP3KTOPI/
- https://security.gentoo.org/glsa/202006-16
- https://vcs.pcre.org/pcre2?view=revision&revision=1092
Products affected by CVE-2019-20454
-
cpe:2.3:a:pcre:pcre2:10.31
-
cpe:2.3:a:pcre:pcre2:10.32
-
cpe:2.3:a:pcre:pcre2:10.33
-
cpe:2.3:a:splunk:universal_forwarder:8.2.0
-
cpe:2.3:a:splunk:universal_forwarder:8.2.10
-
cpe:2.3:a:splunk:universal_forwarder:8.2.11
-
cpe:2.3:a:splunk:universal_forwarder:8.2.6
-
cpe:2.3:a:splunk:universal_forwarder:8.2.7
-
cpe:2.3:a:splunk:universal_forwarder:8.2.8
-
cpe:2.3:a:splunk:universal_forwarder:8.2.9
-
cpe:2.3:a:splunk:universal_forwarder:9.0.0
-
cpe:2.3:a:splunk:universal_forwarder:9.0.1
-
cpe:2.3:a:splunk:universal_forwarder:9.0.2
-
cpe:2.3:a:splunk:universal_forwarder:9.0.3
-
cpe:2.3:a:splunk:universal_forwarder:9.0.4
-
cpe:2.3:a:splunk:universal_forwarder:9.0.5
-
cpe:2.3:a:splunk:universal_forwarder:9.1.0
-
cpe:2.3:o:fedoraproject:fedora:31