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pbkdf2 could be made to generate predictable cryptographic keys if it received specially crafted input.. ========================================================================== Ubuntu Security Notice USN-8452-1 June 18, 2026 node-pbkdf2 vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS Summary: pbkdf2 could be made to generate predictable cryptographic keys if it received specially crafted input. Software Description: - node-pbkdf2: PBKDF2 with any supported hashing algorithm in Node Details: Nikita Skovoroda discovered that pbkdf2 did not properly validate certain algorithm names. An attacker could possibly use this issue to generate predictable cryptographic keys, resulting in signature spoofing. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 24.04 LTS node-pbkdf2 3.1.2-3ubuntu0.1~esm1 Available with Ubuntu Pro Ubuntu 22.04 LTS node-pbkdf2 3.1.2-2ubuntu0.1~esm1 Available with Ubuntu Pro Ubuntu 20.04 LTS node-pbkdf2 3.0.16-1ubuntu0.1~esm1 Available with Ubuntu Pro Ubuntu 18.04 LTS node-pbkdf2 3.0.14-2ubuntu0.1~esm1 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-8452-1 CVE-2025-6545 . Ubuntu Security Notice USN-8452-1 emphasizes an important vulnerability in pbkdf2 leading to predictable keys.. Ubuntu Security, pbkdf2 vulnerability, cryptographic security, predictable keys issue. . Severity: Important. LinuxSecurity.com Team
Update bundled pbkdf2 library.. -------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2025-d3dee9f37d 2025-07-05 01:45:24.506251+00:00 -------------------------------------------------------------------------------- Name : yarnpkg Product : Fedora 41 Version : 1.22.22 Release : 9.fc41 URL : https://github.com/yarnpkg/yarn Summary : Fast, reliable, and secure dependency management. Description : Fast, reliable, and secure dependency management. -------------------------------------------------------------------------------- Update Information: Update bundled pbkdf2 library. -------------------------------------------------------------------------------- ChangeLog: * Tue Jun 24 2025 Sandro Mani - 1.22.22-9 - Add CVE-2025-6545_6547.prebundle.patch and regenerate bundle. Fixes CVE-2025-6545 and CVE-2025-6547. -------------------------------------------------------------------------------- References: [ 1 ] Bug #2374429 - CVE-2025-6547 yarnpkg: pbkdf2 silently returns static keys [epel-8] https://bugzilla.redhat.com/show_bug.cgi?id=2374429 [ 2 ] Bug #2374433 - CVE-2025-6545 yarnpkg: pbkdf2 silently returns predictable key material [epel-8] https://bugzilla.redhat.com/show_bug.cgi?id=2374433 [ 3 ] Bug #2374438 - CVE-2025-6547 yarnpkg: pbkdf2 silently returns static keys [epel-9] https://bugzilla.redhat.com/show_bug.cgi?id=2374438 [ 4 ] Bug #2374443 - CVE-2025-6545 yarnpkg: pbkdf2 silently returns predictable key material [epel-9] https://bugzilla.redhat.com/show_bug.cgi?id=2374443 [ 5 ] Bug #2374450 - CVE-2025-6547 yarnpkg: pbkdf2 silently returns static keys [fedora-41] https://bugzilla.redhat.com/show_bug.cgi?id=2374450 [ 6 ] Bug #2374455 - CVE-2025-6545 yarnpkg: pbkdf2 silently returns predictable key material [fedora-41] https://bugzilla.redhat.com/show_bug.cgi?id=2374455 [ 7 ] Bug #2374462 - CVE-2025-6547 yarnpkg:pbkdf2 silently returns static keys [fedora-42] https://bugzilla.redhat.com/show_bug.cgi?id=2374462 [ 8 ] Bug #2374465 - CVE-2025-6545 yarnpkg: pbkdf2 silently returns predictable key material [fedora-42] https://bugzilla.redhat.com/show_bug.cgi?id=2374465 -------------------------------------------------------------------------------- This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2025-d3dee9f37d' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label All packages are signed with the Fedora Project GPG key. More details on the GPG keys used by the Fedora Project can be found at https://fedoraproject.org/keys -------------------------------------------------------------------------------- -- _______________________________________________ package-announce mailing list --
Update bundled pbkdf2 library.. -------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2025-96ff8c2897 2025-07-04 00:01:57.047516+00:00 -------------------------------------------------------------------------------- Name : yarnpkg Product : Fedora 42 Version : 1.22.22 Release : 9.fc42 URL : https://github.com/yarnpkg/yarn Summary : Fast, reliable, and secure dependency management. Description : Fast, reliable, and secure dependency management. -------------------------------------------------------------------------------- Update Information: Update bundled pbkdf2 library. -------------------------------------------------------------------------------- ChangeLog: * Tue Jun 24 2025 Sandro Mani - 1.22.22-9 - Add CVE-2025-6545_6547.prebundle.patch and regenerate bundle. Fixes CVE-2025-6545 and CVE-2025-6547. -------------------------------------------------------------------------------- References: [ 1 ] Bug #2374429 - CVE-2025-6547 yarnpkg: pbkdf2 silently returns static keys [epel-8] https://bugzilla.redhat.com/show_bug.cgi?id=2374429 [ 2 ] Bug #2374433 - CVE-2025-6545 yarnpkg: pbkdf2 silently returns predictable key material [epel-8] https://bugzilla.redhat.com/show_bug.cgi?id=2374433 [ 3 ] Bug #2374438 - CVE-2025-6547 yarnpkg: pbkdf2 silently returns static keys [epel-9] https://bugzilla.redhat.com/show_bug.cgi?id=2374438 [ 4 ] Bug #2374443 - CVE-2025-6545 yarnpkg: pbkdf2 silently returns predictable key material [epel-9] https://bugzilla.redhat.com/show_bug.cgi?id=2374443 [ 5 ] Bug #2374450 - CVE-2025-6547 yarnpkg: pbkdf2 silently returns static keys [fedora-41] https://bugzilla.redhat.com/show_bug.cgi?id=2374450 [ 6 ] Bug #2374455 - CVE-2025-6545 yarnpkg: pbkdf2 silently returns predictable key material [fedora-41] https://bugzilla.redhat.com/show_bug.cgi?id=2374455 [ 7 ] Bug #2374462 - CVE-2025-6547 yarnpkg:pbkdf2 silently returns static keys [fedora-42] https://bugzilla.redhat.com/show_bug.cgi?id=2374462 [ 8 ] Bug #2374465 - CVE-2025-6545 yarnpkg: pbkdf2 silently returns predictable key material [fedora-42] https://bugzilla.redhat.com/show_bug.cgi?id=2374465 -------------------------------------------------------------------------------- This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2025-96ff8c2897' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label All packages are signed with the Fedora Project GPG key. More details on the GPG keys used by the Fedora Project can be found at https://fedoraproject.org/keys -------------------------------------------------------------------------------- -- _______________________________________________ package-announce mailing list --
Thomas Neil James Shadwell reported that cryptojs, a collection of cryptographic algorithms implemented in JavaScript, had default PBKDF2 settings 1000 times weaker than when specified back in 1993, and 1.3M times weaker than OWASP's current recommendations. . ------------------------------------------------------------------------- Debian LTS Advisory DLA-3669-1
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