========================================================================== Ubuntu Security Notice USN-5495-2 September 29, 2025
curl regression ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.04 LTS Summary: USN-5495-1 introduced a regression in curl Software Description: - curl: HTTP, HTTPS, and FTP client and client libraries Details: USN-5495-1 fixed vulnerabilities in curl. The fix for CVE-2022-32205 miscalculated the maximum cookie size, causing a regression. This update fixes the problem. Original advisory details: Harry Sintonen discovered that curl incorrectly handled certain cookies. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 21.10, and Ubuntu 22.04 LTS. (CVE-2022-32205) Harry Sintonen discovered that curl incorrectly handled certain HTTP compressions. An attacker could possibly use this issue to cause a denial of service. (CVE-2022-32206) Harry Sintonen incorrectly handled certain file permissions. An attacker could possibly use this issue to expose sensitive information. This issue only affected Ubuntu 21.10, and Ubuntu 22.04 LTS. (CVE-2022-32207) Harry Sintonen discovered that curl incorrectly handled certain FTP-KRB messages. An attacker could possibly use this to perform a machine-in-the-middle attack. (CVE-2022-32208) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS curl 7.81.0-1ubuntu1.21 libcurl3-gnutls 7.81.0-1ubuntu1.21 libcurl3-nss 7.81.0-1ubuntu1.21 libcurl4 7.81.0-1ubuntu1.21 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-5495-2 https://ubuntu.com/security/notices/USN-5495-1 https://launchpad.net/bugs/2118865 Package Information: https://launchpad.net/ubuntu/+source/curl/7.81.0-1ubuntu1.21
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