National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-20454 Detail

Current 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.

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 7.5 HIGH
Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Nist CVSS score does not match with CNA score
CNA:  MITRE
Base Score: 5.1 MEDIUM
Vector:  CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://bugs.exim.org/show_bug.cgi?id=2421 Issue Tracking Third Party Advisory
https://bugs.php.net/bug.php?id=78338 Exploit Issue Tracking Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1735494 Issue Tracking Patch
https://vcs.pcre.org/pcre2?view=revision&revision=1092 Patch

Weakness Enumeration

CWE-ID CWE Name Source
CWE-125 Out-of-bounds Read NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:pcre:pcre2:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
10.31
Up to (excluding)
10.34


Change History

2 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-20454
NVD Published Date:
02/14/2020
NVD Last Modified:
02/26/2020