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Gentoo Linux Security Advisory GLSA 200901-10 |
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~ http://security.gentoo.org/ |
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~ Severity: Normal |
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~ Title: GnuTLS: Certificate validation error |
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~ Date: January 14, 2009 |
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~ Bugs: #245850 |
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~ ID: 200901-10 |
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Synopsis |
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======== |
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|
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A certificate validation error in GnuTLS might allow for spoofing |
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attacks. |
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Background |
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========== |
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|
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GnuTLS is an open-source implementation of TLS 1.0 and SSL 3.0. |
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|
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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 net-libs/gnutls < 2.4.1-r2 >= 2.4.1-r2 |
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|
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Description |
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=========== |
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|
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Martin von Gagern reported that the _gnutls_x509_verify_certificate() |
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function in lib/x509/verify.c trusts certificate chains in which the |
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last certificate is an arbitrary trusted, self-signed certificate. |
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|
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Impact |
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====== |
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|
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A remote attacker could exploit this vulnerability and spoof arbitrary |
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names to conduct Man-In-The-Middle attacks and intercept sensitive |
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information. |
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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 GnuTLS users should upgrade to the latest version: |
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|
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~ # emerge --sync |
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~ # emerge --ask --oneshot --verbose ">=net-libs/gnutls-2.4.1-r2" |
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|
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References |
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========== |
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|
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~ [ 1 ] CVE-2008-4989 |
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~ http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4989 |
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|
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Availability |
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============ |
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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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|
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~ http://security.gentoo.org/glsa/glsa-200901-10.xml |
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Concerns? |
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========= |
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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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|
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License |
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======= |
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|
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Copyright 2009 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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