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Ubuntu Security Notice USN-5021-2

Ubuntu Security Notice USN-5021-2
Posted Jan 20, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5021-2 - USN-5021-1 fixed vulnerabilities in curl. This update provides the corresponding updates for Ubuntu 16.04 ESM. 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.

tags | advisory, remote, vulnerability
systems | linux, ubuntu
advisories | CVE-2021-22898, CVE-2021-22925
SHA-256 | cede935a59164fab44bf9dcd2dc33490586a63319e73fe18ccbedba4041ff602

Ubuntu Security Notice USN-5021-2

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-5021-2
January 20, 2022

curl vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.04 ESM

Summary:

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

Software Description:
- 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)

Update instructions:

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

Ubuntu 16.04 ESM:
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

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

References:
https://ubuntu.com/security/notices/USN-5021-2
https://ubuntu.com/security/notices/USN-5021-1
CVE-2021-22898, CVE-2021-22925
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