Fedora alert FEDORA-2026-e8231b773d (perl-Crypt-PBKDF2)
| From: | updates--- via package-announce <package-announce@lists.fedoraproject.org> | |
| To: | package-announce@lists.fedoraproject.org | |
| Subject: | [SECURITY] Fedora 43 Update: perl-Crypt-PBKDF2-0.261630-1.fc43 | |
| Date: | Sun, 21 Jun 2026 01:11:00 +0000 | |
| Message-ID: | <20260621011100.E3F0C7E811@bastion01.rdu3.fedoraproject.org> | |
| Archive-link: | Article |
-------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2026-e8231b773d 2026-06-21 01:09:26.438190+00:00 -------------------------------------------------------------------------------- Name : perl-Crypt-PBKDF2 Product : Fedora 43 Version : 0.261630 Release : 1.fc43 URL : https://metacpan.org/release/Crypt-PBKDF2 Summary : The PBKDF2 password hashing algorithm Description : PBKDF2 is a secure password hashing algorithm that uses the techniques of "key strengthening" to make the complexity of a brute-force attack arbitrarily high. PBKDF2 uses any other cryptographic hash or cipher (by convention, usually HMAC-SHA2, but Crypt::PBKDF2 is fully pluggable), and allows for an arbitrary number of iterations of the hashing function, and a nearly unlimited output hash size (up to 2**32-1 times the size of the output of the backend hash). The hash is salted, as any password hash should be, and the salt may also be of arbitrary size. -------------------------------------------------------------------------------- Update Information: This update addresses a number of security issues: Change the default hash algorithm to HMAC-SHA256, and increase the default number of iterations to 600,000, in line with current OWASP recommendations (CVE-2026-9641) Generate salts using Crypt::URandom (a strong system RNG) instead of perl's builtin rand(), which is not cryptographically secure (CVE-2026-9638) Use a constant-time comparison in validate to avoid timing attacks (CVE-2017-20240) -------------------------------------------------------------------------------- ChangeLog: * Fri Jun 12 2026 Paul Howarth <paul@city-fan.org> - 0.261630-1 - Update to 0.261630 (rhbz#2488228) - Change the default hash algorithm to HMAC-SHA256, and increase the default number of iterations to 600,000, in line with current OWASP recommendations (CVE-2026-9641) - Generate salts using Crypt::URandom (a strong system RNG) instead of perl's builtin rand(), which is not cryptographically secure (CVE-2026-9638) - Use a constant-time comparison in 'validate' to avoid timing attacks (CVE-2017-20240) - Switch to Module::Build::Tiny flow - Package new README file * Sat Jan 17 2026 Fedora Release Engineering <releng@fedoraproject.org> - 0.161520-25 - Rebuilt for https://fedoraproject.org/wiki/Fedora_44_Mass_Rebuild -------------------------------------------------------------------------------- References: [ 1 ] Bug #2488228 - perl-Crypt-PBKDF2-0.261630 is available https://bugzilla.redhat.com/show_bug.cgi?id=2488228 [ 2 ] Bug #2488894 - CVE-2017-20240 perl-Crypt-PBKDF2: information disclosure via timing attack [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2488894 [ 3 ] Bug #2488896 - CVE-2026-9641 perl-Crypt-PBKDF2: weak default algorithm and insufficient iterations [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2488896 [ 4 ] Bug #2488899 - CVE-2026-9638 perl-Crypt-PBKDF2: generation of insecure random values for salts [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2488899 -------------------------------------------------------------------------------- This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-e8231b773d' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgr... 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 -- package-announce@lists.fedoraproject.org To unsubscribe send an email to package-announce-leave@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-cond... List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/package-ann... Do not reply to spam, report it: https://forge.fedoraproject.org/infra/tickets/issues/new