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USN-5894-1: curl vulnerabilities

27 February 2023

Several security issues were fixed in curl.

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Releases

Packages

  • curl - HTTP, HTTPS, and FTP client and client libraries

Details

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.
(CVE-2022-43552)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 16.04
Ubuntu 14.04

In general, a standard system update will make all the necessary changes.

Related notices

  • USN-5021-1: curl, libcurl4-nss-dev, libcurl4-doc, libcurl3-nss, libcurl4, libcurl3-gnutls, libcurl4-gnutls-dev, libcurl4-openssl-dev
  • USN-5021-2: curl, libcurl4-nss-dev, libcurl3-gnutls, libcurl4-doc, libcurl3-nss, libcurl3, libcurl4-gnutls-dev, libcurl4-openssl-dev
  • USN-5788-1: curl, libcurl4-nss-dev, libcurl4-doc, libcurl3-nss, libcurl4, libcurl3-gnutls, libcurl4-gnutls-dev, libcurl4-openssl-dev