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[ GLSA 200609-18 ] Opera: RSA signature forgery
From: Matthias Geerdsen <vorlon () gentoo org>
Date: Thu, 28 Sep 2006 16:06:27 +0200
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200609-18 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Opera: RSA signature forgery Date: September 28, 2006 Bugs: #147838 ID: 200609-18 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Opera fails to correctly verify certain signatures. Background ========== Opera is a multi-platform web browser. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 www-client/opera < 9.0.2 >= 9.0.2 Description =========== Opera makes use of OpenSSL, which fails to correctly verify PKCS #1 v1.5 RSA signatures signed by a key with exponent 3. Some CAs in Opera's list of trusted signers are using root certificates with exponent 3. Impact ====== An attacker could forge certificates which will appear valid and signed by a trusted CA. Workaround ========== There is no known workaround at this time. Resolution ========== All Opera users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=www-client/opera-9.0.2" References ========== [ 1 ] Opera Advisory http://www.opera.com/support/search/supsearch.dml?index=845 [ 2 ] GLSA 200609-05 http://www.gentoo.org/security/en/glsa/glsa-200609-05.xml Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200609-18.xml 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 security () gentoo org or alternatively, you may file a bug at http://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. http://creativecommons.org/licenses/by-sa/2.5
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- [ GLSA 200609-18 ] Opera: RSA signature forgery Matthias Geerdsen (Sep 28)