A curl security update has been released for Ubuntu Linux 14.04 LTS, 16.04 LTS, and 18.04 LTS.

[USN-6429-2] curl vulnerability

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Ubuntu Security Notice USN-6429-2
October 11, 2023

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

- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)
- Ubuntu 14.04 LTS (Available with Ubuntu Pro)

Summary:

Several security issues were fixed in curl.

Software Description:
- curl: HTTP, HTTPS, and FTP client and client libraries

Details:

USN-6429-1 fixed a vulnerability in curl. This update provides
the corresponding update for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS
and Ubuntu 18.04 LTS.

Original advisory details:

It was discovered that curl incorrectly handled cookies when an application
duplicated certain handles. A local attacker could possibly create a cookie
file and inject arbitrary cookies into subsequent connections.
(CVE-2023-38546)

Update instructions:

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

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
curl 7.58.0-2ubuntu3.24+esm2
libcurl3-gnutls 7.58.0-2ubuntu3.24+esm2
libcurl3-nss 7.58.0-2ubuntu3.24+esm2
libcurl4 7.58.0-2ubuntu3.24+esm2

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
curl 7.47.0-1ubuntu2.19+esm10
libcurl3 7.47.0-1ubuntu2.19+esm10
libcurl3-gnutls 7.47.0-1ubuntu2.19+esm10
libcurl3-nss 7.47.0-1ubuntu2.19+esm10

Ubuntu 14.04 LTS (Available with Ubuntu Pro):
curl 7.35.0-1ubuntu2.20+esm17
libcurl3 7.35.0-1ubuntu2.20+esm17
libcurl3-gnutls 7.35.0-1ubuntu2.20+esm17
libcurl3-nss 7.35.0-1ubuntu2.20+esm17

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

References:
https://ubuntu.com/security/notices/USN-6429-2
https://ubuntu.com/security/notices/USN-6429-1
CVE-2023-38546