CVE-2019-20454 - CVE House
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Status published Medium CVE-2019-20454

An out-of-bounds read was discovered in PCRE before 10.34 when...

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

pcre2, fedora, universal forwarder
Vulnerable Versions:
10.31, 31, 8.2.0, 9.0.0, 9.1.0

Timeline

Official Publish: February 14th, 2020
Last Modified: August 5th, 2024
Added to House: July 20th, 2026

CVSS Vectors

V3: CVSS:3.0/AC:H/AV:L/A:H/C:N/I:N/PR:N/S:U/UI:N

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.