USN-6429-3: curl vulnerabilities

Releases

• Ubuntu 23.10

Packages

• curl - HTTP, HTTPS, and FTP client and client libraries

Details

USN-6429-1 fixed vulnerabilities in curl. This update provides the
corresponding updates for Ubuntu 23.10.

Original advisory details:

Jay Satiro discovered that curl incorrectly handled hostnames when using a
SOCKS5 proxy. In environments where curl is configured to use a SOCKS5
proxy, a remote attacker could possibly use this issue to execute arbitrary
code. This issue only affected Ubuntu 22.04 LTS, and Ubuntu 23.04.
(CVE-2023-38545)

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 23.10

• curl - 8.2.1-1ubuntu3.1
• libcurl3-gnutls - 8.2.1-1ubuntu3.1
• libcurl3-nss - 8.2.1-1ubuntu3.1
• libcurl4 - 8.2.1-1ubuntu3.1

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

References

• CVE-2023-38546
• CVE-2023-38545

Related notices

• USN-6429-1: libcurl4-gnutls-dev, curl, libcurl4-nss-dev, libcurl3-gnutls, libcurl4-doc, libcurl4-openssl-dev, libcurl3-nss, libcurl4
• USN-6429-2: libcurl3, libcurl4-gnutls-dev, curl, libcurl4-nss-dev, libcurl3-gnutls, libcurl4-doc, libcurl4-openssl-dev, libcurl3-nss, libcurl4