USN-6718-1: curl vulnerabilities

Releases

• Ubuntu 23.10
• Ubuntu 22.04 LTS
• Ubuntu 20.04 LTS

Packages

• 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

• 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

• 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

• CVE-2024-2004
• CVE-2024-2398

Related notices

• USN-6718-3: libcurl4-gnutls-dev, curl, libcurl4-doc, libcurl4t64, libcurl4-openssl-dev, libcurl3t64-gnutls
• USN-6718-2: libcurl4-gnutls-dev, curl, libcurl4-nss-dev, libcurl4-doc, libcurl4-openssl-dev, libcurl3, libcurl4, libcurl3-nss, libcurl3-gnutls