Advisory Published

USN-6535-1: curl vulnerabilities

First published: Wed Dec 06 2023(Updated: )

Harry Sintonen discovered that curl incorrectly handled mixed case cookie domains. A remote attacker could possibly use this issue to set cookies that get sent to different and unrelated sites and domains. (CVE-2023-46218) Maksymilian Arciemowicz discovered that curl incorrectly handled long file names when saving HSTS data. This could result in curl losing HSTS data, and subsequent requests to a site would be done without it, contrary to expectations. This issue only affected Ubuntu 23.04 and Ubuntu 23.10. (CVE-2023-46219)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/curl<8.2.1-1ubuntu3.2
8.2.1-1ubuntu3.2
Ubuntu Ubuntu=23.10
All of
ubuntu/libcurl3-gnutls<8.2.1-1ubuntu3.2
8.2.1-1ubuntu3.2
Ubuntu Ubuntu=23.10
All of
ubuntu/libcurl3-nss<8.2.1-1ubuntu3.2
8.2.1-1ubuntu3.2
Ubuntu Ubuntu=23.10
All of
ubuntu/libcurl4<8.2.1-1ubuntu3.2
8.2.1-1ubuntu3.2
Ubuntu Ubuntu=23.10
All of
ubuntu/curl<7.88.1-8ubuntu2.4
7.88.1-8ubuntu2.4
Ubuntu Ubuntu=23.04
All of
ubuntu/libcurl3-gnutls<7.88.1-8ubuntu2.4
7.88.1-8ubuntu2.4
Ubuntu Ubuntu=23.04
All of
ubuntu/libcurl3-nss<7.88.1-8ubuntu2.4
7.88.1-8ubuntu2.4
Ubuntu Ubuntu=23.04
All of
ubuntu/libcurl4<7.88.1-8ubuntu2.4
7.88.1-8ubuntu2.4
Ubuntu Ubuntu=23.04
All of
ubuntu/curl<7.81.0-1ubuntu1.15
7.81.0-1ubuntu1.15
Ubuntu Ubuntu=22.04
All of
ubuntu/libcurl3-gnutls<7.81.0-1ubuntu1.15
7.81.0-1ubuntu1.15
Ubuntu Ubuntu=22.04
All of
ubuntu/libcurl3-nss<7.81.0-1ubuntu1.15
7.81.0-1ubuntu1.15
Ubuntu Ubuntu=22.04
All of
ubuntu/libcurl4<7.81.0-1ubuntu1.15
7.81.0-1ubuntu1.15
Ubuntu Ubuntu=22.04
All of
ubuntu/curl<7.68.0-1ubuntu2.21
7.68.0-1ubuntu2.21
Ubuntu Ubuntu=20.04
All of
ubuntu/libcurl3-gnutls<7.68.0-1ubuntu2.21
7.68.0-1ubuntu2.21
Ubuntu Ubuntu=20.04
All of
ubuntu/libcurl3-nss<7.68.0-1ubuntu2.21
7.68.0-1ubuntu2.21
Ubuntu Ubuntu=20.04
All of
ubuntu/libcurl4<7.68.0-1ubuntu2.21
7.68.0-1ubuntu2.21
Ubuntu Ubuntu=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-6535-1.

  • What is the title of the vulnerability?

    The title of the vulnerability is 'USN-6535-1: curl vulnerabilities'.

  • Who discovered the vulnerability?

    Harry Sintonen discovered the vulnerability related to mixed case cookie domains and Maksymilian Arciemowicz discovered the vulnerability related to long file names.

  • What is the impact of the vulnerability?

    The vulnerability could allow a remote attacker to set cookies that get sent to different and unrelated sites and domains.

  • How can I fix the vulnerability?

    To fix the vulnerability, update the affected software to version 8.2.1-1ubuntu3.2 or later.

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