Buffer overflow in Haproxy
CVE-2020-11100
In hpack_dht_insert in hpack-tbl.c in the HPACK decoder in HAProxy 1.8 through 2.x before 2.1.4, a remote attacker can write arbitrary bytes around a certain location on the heap via a crafted HTTP/2 request, possibly causing remote code e…
Vulnerability class: Buffer Overflow
EPSS: 0.607 (99.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Haproxy
- Canonical Ubuntu_linux — versions 18.04, 19.10
- Debian Debian_linux — versions 10.0
- Fedoraproject Fedora — versions 30, 31
- Opensuse Leap — versions 15.1
- Redhat Openshift_container_platform — versions 3.11, 4.0
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (x_refsource_CONFIRM, Release Notes, Vendor Advisory)
- cve@mitre.org (x_refsource_CONFIRM, Mailing List, Third Party Advisory)
- cve@mitre.org (x_refsource_CONFIRM)
- cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory, Issue Tracking)
- cve@mitre.org (x_refsource_CONFIRM)
- cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory, Issue Tracking)
- cve@mitre.org (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
Frequently asked questions
- What is CVE-2020-11100?
- CVE-2020-11100 is a high-severity vulnerability in Haproxy, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2020-04-02.
- How severe is CVE-2020-11100?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2020-11100 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.