CVE-2019-20838

HIGH EPSS 84.5%
Published Jun 15, 20206y ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published Jun 15, 2020 6y ago
Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
84.5% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-125 Out-of-bounds Read Memory Safety

Affected Products 5

VendorProductVersionRange
pcrepcre* <8.43
applemacos* <11.0.1
splunkuniversal_forwarder*≥8.2.0  –  <8.2.12
splunkuniversal_forwarder*≥9.0.0  –  <9.0.6
splunkuniversal_forwarder9.1.0any

References 7

  • seclists.org http://seclists.org/fulldisclosure/2020/Dec/32
    Mailing ListThird Party Advisory
  • seclists.org http://seclists.org/fulldisclosure/2021/Feb/14
    Mailing ListThird Party Advisory
  • bugs.gentoo.org https://bugs.gentoo.org/717920
    Issue TrackingPatchThird Party AdvisoryVDB Entry
  • lists.apache.org https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
    Mailing ListThird Party Advisory
  • support.apple.com https://support.apple.com/kb/HT211931
    Vendor Advisory
  • support.apple.com https://support.apple.com/kb/HT212147
    Vendor Advisory
  • pcre.org https://www.pcre.org/original/changelog.txt
    Release NotesVendor Advisory

Remediation

  • bugs.gentoo.org https://bugs.gentoo.org/717920
    Issue TrackingPatchThird Party AdvisoryVDB Entry