drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mangelnde Prüfung von Zertifikaten in GnuTLS
Name: |
Mangelnde Prüfung von Zertifikaten in GnuTLS |
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ID: |
200609-15 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
Di, 26. September 2006, 18:02 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4790 |
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Applikationen: |
GNU Transport Layer Security Library |
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Originalnachricht |
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200609-15 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal Title: GnuTLS: RSA Signature Forgery Date: September 26, 2006 Bugs: #147682 ID: 200609-15
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Synopsis ========
GnuTLS fails to handle excess data which could allow an attacker to forge a PKCS #1 v1.5 signature.
Background ==========
GnuTLS is an implementation of SSL 3.0 and TLS 1.0.
Affected packages =================
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-libs/gnutls < 1.4.4 >= 1.4.4
Description ===========
verify.c fails to properly handle excess data in digestAlgorithm.parameters field while generating a hash when using an RSA key with exponent 3. RSA keys that use exponent 3 are commonplace.
Impact ======
Remote attackers could forge PKCS #1 v1.5 signatures that are signed with an RSA key, preventing GnuTLS from correctly verifying X.509 and other certificates that use PKCS.
Workaround ==========
There is no known workaround at this time.
Resolution ==========
All GnuTLS users should update both packages:
# emerge --sync # emerge --update --ask --verbose ">=net-libs/gnutls-1.4.4"
References ==========
[ 1 ] CVE-2006-4790 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4790
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200609-15.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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