CVE-2021-22946
curl - security update
7.5
HIGH
CVSS 3.1
EPSS 0.06%
Description
A user can tell curl >= 7.20.0 and <= 7.78.0 to require a successful upgrade to TLS when speaking to an IMAP, POP3 or FTP server (`--ssl-reqd` on the command line or`CURLOPT_USE_SSL` set to `CURLUSESSL_CONTROL` or `CURLUSESSL_ALL` withlibcurl). This requirement could be bypassed if the server would return a properly crafted but perfectly legitimate response.This flaw would then make curl silently continue its operations **withoutTLS** contrary to the instructions and expectations, exposing possibly sensitive data in clear text over the network.
How to fix CVE-2021-22946
To remediate CVE-2021-22946, upgrade the affected package to a fixed version below.
- —upgrade to 7.79.0-r0 or later
- —upgrade to 7.74.0-1.3+deb11u2 or later
- —upgrade to 7.52.1-5+deb9u16 or later
Is CVE-2021-22946 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 7.79.0-r0
- from 0, < 7.74.0-1.3+deb11u2
- from 0, < 7.52.1-5+deb9u16
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |