1. Ubuntu Security Notices
  2. USN-5021-2

USN-5021-2: curl vulnerability

Publication date

20 January 2022

Overview

curl could be made to expose sensitive information if it received a specially crafted input.

Releases

Packages

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

Details

USN-5021-1 fixed vulnerabilities in curl. This update provides
the corresponding updates for Ubuntu 16.04 ESM.

Original advisory 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. (CVE-2021-22898,
CVE-2021-22925)

USN-5021-1 fixed vulnerabilities in curl. This update provides
the corresponding updates for Ubuntu 16.04 ESM.

Original advisory 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. (CVE-2021-22898,
CVE-2021-22925)

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 curl –  7.47.0-1ubuntu2.19+esm3  
libcurl3 –  7.47.0-1ubuntu2.19+esm3  
libcurl3-gnutls –  7.47.0-1ubuntu2.19+esm3  
libcurl3-nss –  7.47.0-1ubuntu2.19+esm3  

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References

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