drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mangelnde Prüfung von Zertifikaten in OpenSSL
Name: |
Mangelnde Prüfung von Zertifikaten in OpenSSL |
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ID: |
200902-02 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
Do, 12. Februar 2009, 22:15 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5077 |
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Applikationen: |
OpenSSL |
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Originalnachricht |
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200902-02 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal Title: OpenSSL: Certificate validation error Date: February 12, 2009 Bugs: #251346 ID: 200902-02
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Synopsis ========
An error in the OpenSSL certificate chain validation might allow for spoofing attacks.
Background ==========
OpenSSL is an Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) as well as a general purpose cryptography library.
Affected packages =================
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-libs/openssl < 0.9.8j >= 0.9.8j
Description ===========
The Google Security Team reported that several functions incorrectly check the result after calling the EVP_VerifyFinal() function, allowing a malformed signature to be treated as a good signature rather than as an error. This issue affects the signature checks on DSA and ECDSA keys used with SSL/TLS.
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 OpenSSL users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=dev-libs/openssl-0.9.8j"
References ==========
[ 1 ] CVE-2008-5077 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5077
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200902-02.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 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.
http://creativecommons.org/licenses/by-sa/2.5
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