1. Ubuntu Security Notices
  2. USN-5894-1

USN-5894-1: curl vulnerabilities

Publication date

27 February 2023

Overview

Several security issues were fixed in curl.

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)

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)

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
16.04 xenial libcurl3-gnutls –  7.47.0-1ubuntu2.19+esm7  
libcurl3-nss –  7.47.0-1ubuntu2.19+esm7  
libcurl3 –  7.47.0-1ubuntu2.19+esm7  
curl –  7.47.0-1ubuntu2.19+esm7  
14.04 trusty libcurl3-gnutls –  7.35.0-1ubuntu2.20+esm14  
libcurl3-nss –  7.35.0-1ubuntu2.20+esm14  
libcurl3 –  7.35.0-1ubuntu2.20+esm14  
curl –  7.35.0-1ubuntu2.20+esm14  

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References

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