CVE-2020-11100
haproxy - security update
8.8
HIGH
CVSS 3.1
EPSS 74.4%
Description
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 execution.
How to fix CVE-2020-11100
To remediate CVE-2020-11100, upgrade the affected package to a fixed version below.
- Alpine/haproxy—upgrade to 2.0.14-r0 or later
- —upgrade to 2.1.4 or later
- —upgrade to 2.0.13-2 or later
- —upgrade to 1.8.19-1+deb10u2 or later
Is CVE-2020-11100 being exploited?
Likely — EPSS is 74.4%, placing CVE-2020-11100 in the top tier of vulnerabilities by exploitation probability. Prioritise patching.
Affected packages (4)
- from 0, < 2.0.14-r0
- >= 1.8.0, < 2.1.4
- from 0, < 2.0.13-2
- from 0, < 1.8.19-1+deb10u2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |