USN-5894-1: curl vulnerabilities
Ubuntu Security Notice USN-5894-1
February 27, 2023
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.04 ESM
- Ubuntu 14.04 ESM
Several security issues were fixed in curl.
- curl: HTTP, HTTPS, and FTP client and client libraries
Harry Sintonen and Tomas Hoger discovered that curl incorrectly handled
TELNET connections when the -t option was used on the command line.
Uninitialized data possibly containing sensitive information could be sent
to the remote server, contrary to expectations. This issue was only fixed
in Ubuntu 14.04 ESM. (CVE-2021-22898, CVE-2021-22925)
It was discovered that curl incorrectly handled denials when using HTTP
proxies. A remote attacker could use this issue to cause curl to crash,
resulting in a denial of service, or possibly execute arbitrary code.
The problem can be corrected by updating your system to the following
Ubuntu 16.04 ESM:
Ubuntu 14.04 ESM:
In general, a standard system update will make all the necessary changes.
CVE-2021-22898, CVE-2021-22925, CVE-2022-43552
A curl security update has been released for Ubuntu Linux 14.04 ESM and 16.04 ESM.