CVE-2021-39242
medium
CVSS v3
—
CVSS v2
—
VIR risk
5.5
Description
An issue was discovered in HAProxy 2.2 before 2.2.16, 2.3 before 2.3.13, and 2.4 before 2.4.3. It can lead to a situation with an attacker-controlled HTTP Host header, because a mismatch between Host and authority is mishandled.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-39242
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2021-39242.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 2.4.3-1 | |
| sles | affected | | |
| debian | bookworm | fixed | 2.2.16-1 |
| debian | bullseye | fixed | 2.2.9-2+deb11u1 |
| debian | forky | fixed | 2.2.16-1 |
| debian | sid | fixed | 2.2.16-1 |
| debian | trixie | fixed | 2.2.16-1 |
References
Verify integrity in audit chain (admin only). AS-IS.