CVE-2019-20838
HIGHCVSS 7.5/10EPSS 2.77%
Last modified
CVE-2019-20838 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 2.77% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Pcre | Pcre | < 8.43 |
| Apple | Macos | < 11.0.1 |
| Splunk | Universal Forwarder | >= 8.2.0, < 8.2.12 |
| Splunk | Universal Forwarder | >= 9.0.0, < 9.0.6 |
| Splunk | Universal Forwarder | 9.1.0 |
References
- http://seclists.org/fulldisclosure/2020/Dec/32Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2021/Feb/14Mailing List, Third Party Advisory
- https://bugs.gentoo.org/717920Issue Tracking, Patch, Third Party Advisory, VDB Entry
- https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3EMailing List, Third Party Advisory
- https://support.apple.com/kb/HT211931Vendor Advisory
- https://support.apple.com/kb/HT212147Vendor Advisory
- https://www.pcre.org/original/changelog.txtRelease Notes, Vendor Advisory
- http://seclists.org/fulldisclosure/2020/Dec/32Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2021/Feb/14Mailing List, Third Party Advisory
- https://bugs.gentoo.org/717920Issue Tracking, Patch, Third Party Advisory, VDB Entry
- https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3EMailing List, Third Party Advisory
- https://support.apple.com/kb/HT211931Vendor Advisory
- https://support.apple.com/kb/HT212147Vendor Advisory
- https://www.pcre.org/original/changelog.txtRelease Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2019-20838?
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.
How severe is CVE-2019-20838?
CVE-2019-20838 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.77% probability of exploitation in the next 30 days.
How do I fix CVE-2019-20838?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2019-20838?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST