CVE-2022-43552
5.9
MEDIUM
CVSS 3.1
EPSS 0.10%
Description
A use after free vulnerability exists in curl <7.87.0. Curl can be asked to *tunnel* virtually all protocols it supports through an HTTP proxy. HTTP proxies can (and often do) deny such tunnel operations. When getting denied to tunnel the specific protocols SMB or TELNET, curl would use a heap-allocated struct after it had been freed, in its transfer shutdown code path.
How to fix CVE-2022-43552
To remediate CVE-2022-43552, upgrade the affected package to a fixed version below.
- —upgrade to 7.79.1-r4 or later
- —upgrade to 7.74.0-1.3+deb11u5 or later
Is CVE-2022-43552 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 7.79.1-r4
- from 0, < 7.74.0-1.3+deb11u5
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |