CVE-2019-20454
pcre2 - security update
7.5
HIGH
CVSS 3.1
EPSS 0.09%
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.
How to fix CVE-2019-20454
To remediate CVE-2019-20454, upgrade the affected package to a fixed version below.
- —upgrade to 10.34-1 or later
- —upgrade to 10.32-5+deb10u1 or later
Is CVE-2019-20454 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 10.34-1
- from 0, < 10.32-5+deb10u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |