[USN-6429-3] curl vulnerabilities

Marc Deslauriers marc.deslauriers at canonical.com
Tue Oct 17 13:02:38 UTC 2023

Ubuntu Security Notice USN-6429-3
October 17, 2023

curl vulnerabilities

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


Several security issues were fixed in curl.

Software Description:


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.
   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.

Update instructions:

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

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

   CVE-2023-38545, CVE-2023-38546

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