CVE-2019-20454

 

Published at: - 14-02-2020 03:15

Last modified: - 27-01-2023 07:25

Total changes: - 2

Description

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

 

Verification logic

 

Reference

• https://bugs.php.net/bug.php?id=78338
• https://bugs.exim.org/show_bug.cgi?id=2421
• https://bugzilla.redhat.com/show_bug.cgi?id=1735494
• https://vcs.pcre.org/pcre2?view=revision&revision=1092
• GLSA-202006-16-Third Party Advisory
• FEDORA-2020-b11cf352bd-Mailing List, Third Party Advisory

 

Keywords

NVD

 

CVE-2019-20454

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures