Out-of-bounds Read in Haproxy
CVE-2018-20615
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.
Vulnerability class: Buffer Overflow
EPSS: 0.045 (90.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Haproxy — versions 1.9.0
- Canonical Ubuntu_linux — versions 16.04, 18.04, 18.10
- Opensuse Leap — versions 15.0
- Redhat Enterprise_linux — versions 7.0, 7.4, 7.5
- Redhat Openshift_container_platform — versions 3.11
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- cve@mitre.org (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- cve@mitre.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- cve@mitre.org (mailing-list, x_refsource_MLIST)
- cve@mitre.org (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-20615?
- CVE-2018-20615 is a high-severity vulnerability in Haproxy, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2019-03-21.
- How severe is CVE-2018-20615?
- High severity. CVSS v3 base score is 7.5 out of 10.