Advisory Published

USN-6429-3: curl vulnerabilities

First published: Tue Oct 17 2023(Updated: )

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)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/curl<8.2.1-1ubuntu3.1
8.2.1-1ubuntu3.1
=23.10
All of
ubuntu/libcurl3-gnutls<8.2.1-1ubuntu3.1
8.2.1-1ubuntu3.1
=23.10
All of
ubuntu/libcurl3-nss<8.2.1-1ubuntu3.1
8.2.1-1ubuntu3.1
=23.10
All of
ubuntu/libcurl4<8.2.1-1ubuntu3.1
8.2.1-1ubuntu3.1
=23.10

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Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What vulnerability does USN-6429-3 fix?

    USN-6429-3 fixes vulnerabilities in curl.

  • What is the severity of USN-6429-3?

    The severity of USN-6429-3 is not specified.

  • How does USN-6429-3 impact Ubuntu 23.10?

    USN-6429-3 provides corresponding updates for Ubuntu 23.10 to address the vulnerabilities in curl.

  • What are the affected software packages for USN-6429-3?

    The affected software packages for USN-6429-3 are curl, libcurl3-gnutls, libcurl3-nss, and libcurl4.

  • How can I fix the vulnerabilities addressed in USN-6429-3?

    To fix the vulnerabilities addressed in USN-6429-3, update the affected software packages to version 8.2.1-1ubuntu3.1 or later.

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