Gentoo: GLSA-200901-10: GnuTLS: Certificate validation error
A certificate validation error in GnuTLS might allow for spoofing attacks.
Summary
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Gentoo Linux Security Advisory GLSA 200901-10 ~ https://security.gentoo.org/
~ Severity: Normal ~ Title: GnuTLS: Certificate validation error ~ Date: January 14, 2009 ~ Bugs: #245850 ~ ID: 200901-10
Synopsis ======= A certificate validation error in GnuTLS might allow for spoofing attacks.
Background ========= GnuTLS is an open-source implementation of TLS 1.0 and SSL 3.0.
Affected packages ================ ~ ------------------------------------------------------------------- ~ Package / Vulnerable / Unaffected ~ ------------------------------------------------------------------- ~ 1 net-libs/gnutls < 2.4.1-r2 >= 2.4.1-r2
========== Martin von Gagern reported that the _gnutls_x509_verify_certificate() function in lib/x509/verify.c trusts certificate chains in which the last certificate is an arbitrary trusted, self-signed certificate.
Impact ===== A remote attacker could exploit this vulnerability and spoof arbitrary names to conduct Man-In-The-Middle attacks and intercept sensitive information.
Workaround ========= There is no known workaround at this time.
Resolution ========= All GnuTLS users should upgrade to the latest version:
~ # emerge --sync ~ # emerge --ask --oneshot --verbose ">=net-libs/gnutls-2.4.1-r2"
References ========= ~ [ 1 ] CVE-2008-4989 ~ http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4989
Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
~ https://security.gentoo.org/glsa/200901-10
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 https://bugs.gentoo.org/.
License ====== Copyright 2009 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/2.5/
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Resolution
References
Availability
Concerns
Severity
