CVE Vulnerability

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.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://bugs.php.net/bug.php?id=78338 Exploit Issue Tracking
https://bugs.exim.org/show_bug.cgi?id=2421 Issue Tracking Permissions Required
https://bugzilla.redhat.com/show_bug.cgi?id=1735494 Issue Tracking Patch
https://vcs.pcre.org/pcre2?view=revision&revision=1092 Broken Link Patch
https://security.gentoo.org/glsa/202006-16 Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OQRAHYHLRNMBTPR3KXVM27NSZP3KTOPI/ Mailing List Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:pcre:pcre2:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
Information

Published : 2020-02-14 02:15

Updated : 2023-01-27 06:25

NVD link : CVE-2019-20454

Mitre link : CVE-2019-20454

Products Affected
No products.
CWE
CWE-125

Out-of-bounds Read