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Gentoo: GLSA 202305-10 Moderate: Net::HTTP Vulnerable to Redirection Attack

Crypt::CBC uses an insecure initialization vector, potentially resulting in a weaker encryption.. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200603-15 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Low Title: Crypt::CBC: Insecure initialization vector Date: March 17, 2006 Bugs: #126048 ID: 200603-15 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= Crypt::CBC uses an insecure initialization vector, potentially resulting in a weaker encryption. Background ========= Crypt::CBC is a Perl module to encrypt data using cipher block chaining (CBC). Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-perl/crypt-cbc < 2.17 > = 2.17 Description ========== Lincoln Stein discovered that Crypt::CBC fails to handle 16 bytes long initializiation vectors correctly when running in the RandomIV mode, resulting in a weaker encryption because the second part of every block will always be encrypted with zeros if the blocksize of the cipher is greater than 8 bytes. Impact ===== An attacker could exploit weak ciphertext produced by Crypt::CBC to bypass certain security restrictions or to gain access to sensitive data. Workaround ========= There is no known workaround at this time. Resolution ========= All Crypt::CBC users should upgrade to the latest available version: # emerge --sync # emerge --ask --oneshot --verbose "> =dev-perl/crypt-cbc-2.17" References ========= [ 1 ] CVE-2006-0898 https://www.cve.org/CVERecord?id=CVE-2006-0898 Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/200603-15 Concerns? ======== Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to This email address is being protected from spambots. You need JavaScript enabled to view it. or alternatively, you may file a bug at https://bugs.gentoo.org/. License ====== Copyright 2006 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. https://creativecommons.org/licenses/by-sa/2.0/ . The Gentoo advisory GLSA 202201-18 highlights a minor concern in Crypt::Secure with respect to a flawed encryption key management.. Crypt CBC, Insecure Vector, Gentoo Security, Encryption Issue, Weak Cipher. . Severity: Low. LinuxSecurity.com Team

Mar 17, 2006 •Low Gentoo