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Gentoo Linux Security Advisory GLSA 200609-18 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: Opera: RSA signature forgery |
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Date: September 28, 2006 |
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Bugs: #147838 |
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ID: 200609-18 |
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Synopsis |
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======== |
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Opera fails to correctly verify certain signatures. |
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Background |
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========== |
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Opera is a multi-platform web browser. |
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 www-client/opera < 9.0.2 >= 9.0.2 |
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Description |
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=========== |
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|
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Opera makes use of OpenSSL, which fails to correctly verify PKCS #1 |
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v1.5 RSA signatures signed by a key with exponent 3. Some CAs in |
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Opera's list of trusted signers are using root certificates with |
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exponent 3. |
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Impact |
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====== |
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An attacker could forge certificates which will appear valid and signed |
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by a trusted CA. |
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Workaround |
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========== |
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There is no known workaround at this time. |
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Resolution |
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========== |
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All Opera users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=www-client/opera-9.0.2" |
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References |
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========== |
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[ 1 ] Opera Advisory |
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http://www.opera.com/support/search/supsearch.dml?index=845 |
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[ 2 ] GLSA 200609-05 |
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http://www.gentoo.org/security/en/glsa/glsa-200609-05.xml |
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Availability |
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============ |
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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http://security.gentoo.org/glsa/glsa-200609-18.xml |
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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http://bugs.gentoo.org. |
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License |
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======= |
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Copyright 2006 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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http://creativecommons.org/licenses/by-sa/2.5 |
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