drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in OpenSSL (Aktualisierung)
Name: |
Mehrere Probleme in OpenSSL (Aktualisierung) |
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ID: |
USN-3087-2 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 12.04 LTS, Ubuntu 14.04 LTS, Ubuntu 16.04 LTS |
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Datum: |
Fr, 23. September 2016, 19:19 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2179
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6306
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2178
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2180
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2183
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2177
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2182
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6303
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2181
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6304
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6302 |
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Applikationen: |
OpenSSL |
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Update von: |
Mehrere Probleme in OpenSSL |
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Originalnachricht |
This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --===============7217285964518459517== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="1Te21nbmh5TJOseWCS58Sel6rkU5p44dW"
This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --1Te21nbmh5TJOseWCS58Sel6rkU5p44dW Content-Type: multipart/mixed; boundary="UMmIl1JWMljQEmMPnRTF3Upv3Lj23oTSG" From: Marc Deslauriers <marc.deslauriers@canonical.com> Reply-To: Ubuntu Security <security@ubuntu.com> To: "ubuntu-security-announce@lists.ubuntu.com" <ubuntu-security-announce@lists.ubuntu.com> Message-ID: <a73bc593-fd5c-17bf-d82d-e446dd4f00ac@canonical.com> Subject: [USN-3087-2] OpenSSL regression
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========================================================================== Ubuntu Security Notice USN-3087-2 September 23, 2016
openssl regression ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.04 LTS - Ubuntu 14.04 LTS - Ubuntu 12.04 LTS
Summary:
USN-3087-1 introduced a regression in OpenSSL.
Software Description: - openssl: Secure Socket Layer (SSL) cryptographic library and tools
Details:
USN-3087-1 fixed vulnerabilities in OpenSSL. The fix for CVE-2016-2182 was incomplete and caused a regression when parsing certificates. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
Shi Lei discovered that OpenSSL incorrectly handled the OCSP Status Request extension. A remote attacker could possibly use this issue to cause memory consumption, resulting in a denial of service. (CVE-2016-6304) Guido Vranken discovered that OpenSSL used undefined behaviour when performing pointer arithmetic. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. This issue has only been addressed in Ubuntu 16.04 LTS in this update. (CVE-2016-2177) César Pereida, Billy Brumley, and Yuval Yarom discovered that OpenSSL did not properly use constant-time operations when performing DSA signing. A remote attacker could possibly use this issue to perform a cache-timing attack and recover private DSA keys. (CVE-2016-2178) Quan Luo discovered that OpenSSL did not properly restrict the lifetime of queue entries in the DTLS implementation. A remote attacker could possibly use this issue to consume memory, resulting in a denial of service. (CVE-2016-2179) Shi Lei discovered that OpenSSL incorrectly handled memory in the TS_OBJ_print_bio() function. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2016-2180) It was discovered that the OpenSSL incorrectly handled the DTLS anti-replay feature. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2016-2181) Shi Lei discovered that OpenSSL incorrectly validated division results. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2016-2182) Karthik Bhargavan and Gaetan Leurent discovered that the DES and Triple DES ciphers were vulnerable to birthday attacks. A remote attacker could possibly use this flaw to obtain clear text data from long encrypted sessions. This update moves DES from the HIGH cipher list to MEDIUM. (CVE-2016-2183) Shi Lei discovered that OpenSSL incorrectly handled certain ticket lengths. A remote attacker could use this issue to cause a denial of service. (CVE-2016-6302) Shi Lei discovered that OpenSSL incorrectly handled memory in the MDC2_Update() function. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2016-6303) Shi Lei discovered that OpenSSL incorrectly performed certain message length checks. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2016-6306)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 16.04 LTS: libssl1.0.0 1.0.2g-1ubuntu4.5
Ubuntu 14.04 LTS: libssl1.0.0 1.0.1f-1ubuntu2.21
Ubuntu 12.04 LTS: libssl1.0.0 1.0.1-4ubuntu5.38
After a standard system update you need to reboot your computer to make all the necessary changes.
References: http://www.ubuntu.com/usn/usn-3087-2 http://www.ubuntu.com/usn/usn-3087-1 https://launchpad.net/bugs/1626883
Package Information: https://launchpad.net/ubuntu/+source/openssl/1.0.2g-1ubuntu4.5 https://launchpad.net/ubuntu/+source/openssl/1.0.1f-1ubuntu2.21 https://launchpad.net/ubuntu/+source/openssl/1.0.1-4ubuntu5.38
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