CVE-2021-22898
curl - security update
3.1
LOW
CVSS 3.1
EPSS 0.13%
Description
curl 7.7 through 7.76.1 suffers from an information disclosure when the `-t` command line option, known as `CURLOPT_TELNETOPTIONS` in libcurl, is used to send variable=content pairs to TELNET servers. Due to a flaw in the option parser for sending NEW_ENV variables, libcurl could be made to pass on uninitialized data from a stack based buffer to the server, resulting in potentially revealing sensitive internal information to the server using a clear-text network protocol.
How to fix CVE-2021-22898
To remediate CVE-2021-22898, upgrade the affected package to a fixed version below.
- —upgrade to 7.66.0-r4 or later
- —upgrade to 7.74.0-1.3+deb11u2 or later
- —upgrade to 7.52.1-5+deb9u15 or later
- —upgrade to 7.64.0-4+deb10u3 or later
- —upgrade to 7.74.0-1.3+deb11u2 or later
Is CVE-2021-22898 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (5)
- from 0, < 7.66.0-r4
- from 0, < 7.74.0-1.3+deb11u2
- from 0, < 7.52.1-5+deb9u15
- from 0, < 7.64.0-4+deb10u3
- from 0, < 7.74.0-1.3+deb11u2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | LOW3.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N |