drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in OpenSSL
Name: |
Mehrere Probleme in OpenSSL |
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ID: |
USN-2914-1 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 12.04 LTS, Ubuntu 14.04 LTS, Ubuntu 15.10 |
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Datum: |
Di, 1. März 2016, 16:38 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-0702
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-0798
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-0797
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-0705
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-0799 |
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Applikationen: |
OpenSSL |
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Originalnachricht |
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========================================================================== Ubuntu Security Notice USN-2914-1 March 01, 2016
openssl vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 15.10 - 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:
Yuval Yarom, Daniel Genkin, and Nadia Heninger discovered that OpenSSL was vulnerable to a side-channel attack on modular exponentiation. On certain CPUs, a local attacker could possibly use this issue to recover RSA keys. This flaw is known as CacheBleed. (CVE-2016-0702)
Adam Langley discovered that OpenSSL incorrectly handled memory when parsing DSA private keys. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2016-0705)
Guido Vranken discovered that OpenSSL incorrectly handled hex digit calculation in the BN_hex2bn function. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2016-0797)
Emilia KÀsper discovered that OpenSSL incorrectly handled memory when performing SRP user database lookups. A remote attacker could possibly use this issue to cause OpenSSL to consume memory, resulting in a denial of service. (CVE-2016-0798)
Guido Vranken discovered that OpenSSL incorrectly handled memory when printing very long strings. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2016-0799)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 15.10: libssl1.0.0 1.0.2d-0ubuntu1.4
Ubuntu 14.04 LTS: libssl1.0.0 1.0.1f-1ubuntu2.18
Ubuntu 12.04 LTS: libssl1.0.0 1.0.1-4ubuntu5.35
After a standard system update you need to reboot your computer to make all the necessary changes.
References: http://www.ubuntu.com/usn/usn-2914-1 CVE-2016-0702, CVE-2016-0705, CVE-2016-0797, CVE-2016-0798, CVE-2016-0799
Package Information: https://launchpad.net/ubuntu/+source/openssl/1.0.2d-0ubuntu1.4 https://launchpad.net/ubuntu/+source/openssl/1.0.1f-1ubuntu2.18 https://launchpad.net/ubuntu/+source/openssl/1.0.1-4ubuntu5.35
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