CVE-2019-20838

moderate-risk
Published 2020-06-15

libpcre in PCRE before 8.43 allows a subject buffer over-read in JIT when UTF is disabled, and \X or \R has more than one fixed quantifier, a related issue to CVE-2019-20454.

Do I need to act?

-
0.31% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (4)

Pcre

Affected Vendors

Apple Pcre Splunk

References (14)

Mailing List http://seclists.org/fulldisclosure/2020/Dec/32
Mailing List http://seclists.org/fulldisclosure/2021/Feb/14
Issue Tracking https://bugs.gentoo.org/717920
Mailing List https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430...
Vendor Advisory https://support.apple.com/kb/HT211931
Vendor Advisory https://support.apple.com/kb/HT212147
Release Notes https://www.pcre.org/original/changelog.txt
Mailing List http://seclists.org/fulldisclosure/2020/Dec/32
Mailing List http://seclists.org/fulldisclosure/2021/Feb/14
Issue Tracking https://bugs.gentoo.org/717920
Mailing List https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430...
Vendor Advisory https://support.apple.com/kb/HT211931
Vendor Advisory https://support.apple.com/kb/HT212147
Release Notes https://www.pcre.org/original/changelog.txt
37
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 1/34 · Minimal
Exposure 10/34 · Low