CVE-2019-20454
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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| n/a n/a |
Version not specified (affected) | CNA: mitre |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.0 / 5.1 medium |
CVSS:3.0/AC:H/AV:L/A:H/C:N/I:N/PR:N/S:U/UI:N | CNA: mitre |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://bugs.exim.org/show_bug.cgi?id=2421CNA: mitre
- https://bugs.php.net/bug.php?id=78338CNA: mitre
- https://vcs.pcre.org/pcre2?view=revision&revision=1092CNA: mitre
- https://bugzilla.redhat.com/show_bug.cgi?id=1735494CNA: mitre
- https://security.gentoo.org/glsa/202006-16CNA: mitre · vendor-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OQRAHYHLRNMBTPR3KXVM27NSZP3KTOPI/CNA: mitre · vendor-advisory
- https://lists.debian.org/debian-lts-announce/2023/03/msg00014.htmlCNA: mitre · mailing-list
- https://bugs.exim.org/show_bug.cgi?id=2421ADP: CVE · x_transferred
- https://bugs.php.net/bug.php?id=78338ADP: CVE · x_transferred
- https://vcs.pcre.org/pcre2?view=revision&revision=1092ADP: CVE · x_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=1735494ADP: CVE · x_transferred
- https://security.gentoo.org/glsa/202006-16ADP: CVE · vendor-advisory, x_transferred
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OQRAHYHLRNMBTPR3KXVM27NSZP3KTOPI/ADP: CVE · vendor-advisory, x_transferred
- https://lists.debian.org/debian-lts-announce/2023/03/msg00014.htmlADP: CVE · mailing-list, x_transferred
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