drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in OpenSSL
Name: |
Mehrere Probleme in OpenSSL |
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ID: |
USN-2639-1 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 12.04 LTS, Ubuntu 14.04 LTS, Ubuntu 14.10, Ubuntu 15.04 |
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Datum: |
Fr, 12. Juni 2015, 07:11 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-8176
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1788
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1789
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1790
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1791
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1792 |
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Applikationen: |
OpenSSL |
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Originalnachricht |
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========================================================================== Ubuntu Security Notice USN-2639-1 June 11, 2015
openssl vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 15.04 - Ubuntu 14.10 - Ubuntu 14.04 LTS - Ubuntu 12.04 LTS
Summary:
Several security issues were fixed in OpenSSL.
Software Description: - openssl: Secure Socket Layer (SSL) cryptographic library and tools
Details:
Praveen Kariyanahalli, Ivan Fratric and Felix Groebert discovered that OpenSSL incorrectly handled memory when buffering DTLS data. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2014-8176)
Joseph Barr-Pixton discovered that OpenSSL incorrectly handled malformed ECParameters structures. A remote attacker could use this issue to cause OpenSSL to hang, resulting in a denial of service. (CVE-2015-1788)
Robert Swiecki and Hanno Böck discovered that OpenSSL incorrectly handled certain ASN1_TIME strings. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2015-1789)
Michal Zalewski discovered that OpenSSL incorrectly handled missing content when parsing ASN.1-encoded PKCS#7 blobs. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2015-1790)
Emilia KÀsper discovered that OpenSSL incorrectly handled NewSessionTicket when being used by a multi-threaded client. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2015-1791)
Johannes Bauer discovered that OpenSSL incorrectly handled verifying signedData messages using the CMS code. A remote attacker could use this issue to cause OpenSSL to hang, resulting in a denial of service. (CVE-2015-1792)
As a security improvement, this update also modifies OpenSSL behaviour to reject DH key sizes below 768 bits, preventing a possible downgrade attack.
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 15.04: libssl1.0.0 1.0.1f-1ubuntu11.4
Ubuntu 14.10: libssl1.0.0 1.0.1f-1ubuntu9.8
Ubuntu 14.04 LTS: libssl1.0.0 1.0.1f-1ubuntu2.15
Ubuntu 12.04 LTS: libssl1.0.0 1.0.1-4ubuntu5.31
After a standard system update you need to reboot your computer to make all the necessary changes.
References: http://www.ubuntu.com/usn/usn-2639-1 CVE-2014-8176, CVE-2015-1788, CVE-2015-1789, CVE-2015-1790, CVE-2015-1791, CVE-2015-1792
Package Information: https://launchpad.net/ubuntu/+source/openssl/1.0.1f-1ubuntu11.4 https://launchpad.net/ubuntu/+source/openssl/1.0.1f-1ubuntu9.8 https://launchpad.net/ubuntu/+source/openssl/1.0.1f-1ubuntu2.15 https://launchpad.net/ubuntu/+source/openssl/1.0.1-4ubuntu5.31
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