CVE-2019-20838
HIGH severity · CVSS 7.5 · Out-of-bounds read
7.5CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)3%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://bugs.gentoo.org/717920 ↗
Additional information
- NVD record
- https://bugs.gentoo.org/717920Patch
- https://support.apple.com/kb/HT211931Advisory
- https://support.apple.com/kb/HT212147Advisory
- https://www.pcre.org/original/changelog.txtAdvisory
- http://seclists.org/fulldisclosure/2020/Dec/32Advisory
- http://seclists.org/fulldisclosure/2021/Feb/14Advisory
- https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3EAdvisory