USN-5021-1: curl vulnerabilities

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

Harry Sintonen discovered that curl incorrectly reused connections in the
connection pool. This could result in curl reusing the wrong connections.
(CVE-2021-22924)

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)

Harry Sintonen discovered that curl incorrectly reused connections in the
connection pool. This could result in curl reusing the wrong connections.
(CVE-2021-22924)

Update instructions

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

Learn more about how to get the fixes.

Ubuntu Release	Package Version
21.04 hirsute	libcurl3-gnutls – 7.74.0-1ubuntu2.1
	libcurl3-nss – 7.74.0-1ubuntu2.1
	libcurl4 – 7.74.0-1ubuntu2.1
	curl – 7.74.0-1ubuntu2.1
20.04 focal	libcurl3-gnutls – 7.68.0-1ubuntu2.6
	libcurl3-nss – 7.68.0-1ubuntu2.6
	libcurl4 – 7.68.0-1ubuntu2.6
	curl – 7.68.0-1ubuntu2.6
18.04 bionic	libcurl3-gnutls – 7.58.0-2ubuntu3.14
	libcurl3-nss – 7.58.0-2ubuntu3.14
	libcurl4 – 7.58.0-2ubuntu3.14
	curl – 7.58.0-2ubuntu3.14

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References

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