Advisory Published

USN-6429-1: curl vulnerabilities

First published: Wed Oct 11 2023(Updated: )

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<7.88.1-8ubuntu2.3
7.88.1-8ubuntu2.3
=23.04
All of
ubuntu/libcurl3-gnutls<7.88.1-8ubuntu2.3
7.88.1-8ubuntu2.3
=23.04
All of
ubuntu/libcurl3-nss<7.88.1-8ubuntu2.3
7.88.1-8ubuntu2.3
=23.04
All of
ubuntu/libcurl4<7.88.1-8ubuntu2.3
7.88.1-8ubuntu2.3
=23.04
All of
ubuntu/curl<7.81.0-1ubuntu1.14
7.81.0-1ubuntu1.14
=22.04
All of
ubuntu/libcurl3-gnutls<7.81.0-1ubuntu1.14
7.81.0-1ubuntu1.14
=22.04
All of
ubuntu/libcurl3-nss<7.81.0-1ubuntu1.14
7.81.0-1ubuntu1.14
=22.04
All of
ubuntu/libcurl4<7.81.0-1ubuntu1.14
7.81.0-1ubuntu1.14
=22.04
All of
ubuntu/curl<7.68.0-1ubuntu2.20
7.68.0-1ubuntu2.20
=20.04
All of
ubuntu/libcurl3-gnutls<7.68.0-1ubuntu2.20
7.68.0-1ubuntu2.20
=20.04
All of
ubuntu/libcurl3-nss<7.68.0-1ubuntu2.20
7.68.0-1ubuntu2.20
=20.04
All of
ubuntu/libcurl4<7.68.0-1ubuntu2.20
7.68.0-1ubuntu2.20
=20.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID?

    The vulnerability ID is USN-6429-1.

  • What software is affected by this vulnerability?

    The software affected by this vulnerability is curl and its related packages libcurl3-gnutls, libcurl3-nss, and libcurl4 on Ubuntu versions 22.04 LTS, 23.04, and 20.04.

  • What is the severity of the vulnerability?

    The severity of the vulnerability is not mentioned in the provided information.

  • How can I fix the vulnerability?

    To fix the vulnerability, update the affected software to the specified versions: curl 7.88.1-8ubuntu2.3, libcurl3-gnutls 7.88.1-8ubuntu2.3, libcurl3-nss 7.88.1-8ubuntu2.3, and libcurl4 7.88.1-8ubuntu2.3 on Ubuntu versions 22.04 LTS, 23.04, and 20.04.

  • Where can I find more information about this vulnerability?

    More information about this vulnerability can be found on the Ubuntu security website and the CVE-2023-38546 and CVE-2023-38545 pages.

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