CVE-2018-20615

Description

An out-of-bounds read issue was discovered in the HTTP/2 protocol decoder in HAProxy 1.8.x and 1.9.x through 1.9.0 which can result in a crash. The processing of the PRIORITY flag in a HEADERS frame requires 5 extra bytes, and while these bytes are skipped, the total frame length was not re-checked to make sure they were present in the frame.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.15%
Vendor Advisory redhat.com Vendor Advisory ubuntu.com Vendor Advisory redhat.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.securityfocus.com/bid/106645 vdb entry third party advisory
https://access.redhat.com/errata/RHSA-2019:0275 third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00018.html third party advisory mailing list
https://usn.ubuntu.com/3858-1/ third party advisory vendor advisory
https://www.mail-archive.com/haproxy%40formilux.org/msg32304.html mailing list
https://access.redhat.com/errata/RHBA-2019:0327 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-20615?
CVE-2018-20615 has been scored as a high severity vulnerability.
How to fix CVE-2018-20615?
To fix CVE-2018-20615, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-20615 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-20615 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.