==========================================================================
Ubuntu Security Notice USN-6718-1
March 27, 2024

curl vulnerabilities
==========================================================================

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

- Ubuntu 23.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in curl.

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

Details:

Dan Fandrich discovered that curl would incorrectly use the default set of
protocols when a parameter option disabled all protocols without adding
any, contrary to expectations. This issue only affected Ubuntu 23.10.
(CVE-2024-2004)

It was discovered that curl incorrectly handled memory when limiting the
amount of headers when HTTP/2 server push is allowed. A remote attacker
could possibly use this issue to cause curl to consume resources, leading
to a denial of service. (CVE-2024-2398)

Update instructions:

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

Ubuntu 23.10:
   curl                            8.2.1-1ubuntu3.3
   libcurl3-gnutls                 8.2.1-1ubuntu3.3
   libcurl3-nss                    8.2.1-1ubuntu3.3
   libcurl4                        8.2.1-1ubuntu3.3

Ubuntu 22.04 LTS:
   curl                            7.81.0-1ubuntu1.16
   libcurl3-gnutls                 7.81.0-1ubuntu1.16
   libcurl3-nss                    7.81.0-1ubuntu1.16
   libcurl4                        7.81.0-1ubuntu1.16

Ubuntu 20.04 LTS:
   curl                            7.68.0-1ubuntu2.22
   libcurl3-gnutls                 7.68.0-1ubuntu2.22
   libcurl3-nss                    7.68.0-1ubuntu2.22
   libcurl4                        7.68.0-1ubuntu2.22

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

References:
   https://ubuntu.com/security/notices/USN-6718-1
   CVE-2024-2004, CVE-2024-2398

Package Information:
   https://launchpad.net/ubuntu/+source/curl/8.2.1-1ubuntu3.3
   https://launchpad.net/ubuntu/+source/curl/7.81.0-1ubuntu1.16
   https://launchpad.net/ubuntu/+source/curl/7.68.0-1ubuntu2.22