Ubuntu alert USN-1732-1 (openssl)
| From: | Marc Deslauriers <marc.deslauriers@canonical.com> | |
| To: | ubuntu-security-announce@lists.ubuntu.com | |
| Subject: | [USN-1732-1] OpenSSL vulnerabilities | |
| Date: | Thu, 21 Feb 2013 09:10:44 -0500 | |
| Message-ID: | <51262AE4.9010007@canonical.com> |
========================================================================== Ubuntu Security Notice USN-1732-1 February 21, 2013 openssl vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 12.10 - Ubuntu 12.04 LTS - Ubuntu 11.10 - Ubuntu 10.04 LTS - Ubuntu 8.04 LTS Summary: Several security issues were fixed in OpenSSL. Software Description: - openssl: Secure Socket Layer (SSL) cryptographic library and tools Details: Adam Langley and Wolfgang Ettlingers discovered that OpenSSL incorrectly handled certain crafted CBC data when used with AES-NI. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service. This issue only affected Ubuntu 12.04 LTS and Ubuntu 12.10. (CVE-2012-2686) Stephen Henson discovered that OpenSSL incorrectly performed signature verification for OCSP responses. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2013-0166) Nadhem Alfardan and Kenny Paterson discovered that the TLS protocol as used in OpenSSL was vulnerable to a timing side-channel attack known as the "Lucky Thirteen" issue. A remote attacker could use this issue to perform plaintext-recovery attacks via analysis of timing data. (CVE-2013-0169) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 12.10: libssl1.0.0 1.0.1c-3ubuntu2.1 Ubuntu 12.04 LTS: libssl1.0.0 1.0.1-4ubuntu5.6 Ubuntu 11.10: libssl1.0.0 1.0.0e-2ubuntu4.7 Ubuntu 10.04 LTS: libssl0.9.8 0.9.8k-7ubuntu8.14 Ubuntu 8.04 LTS: libssl0.9.8 0.9.8g-4ubuntu3.20 After a standard system update you need to reboot your computer to make all the necessary changes. References: http://www.ubuntu.com/usn/usn-1732-1 CVE-2012-2686, CVE-2013-0166, CVE-2013-0169 Package Information: https://launchpad.net/ubuntu/+source/openssl/1.0.1c-3ubun... https://launchpad.net/ubuntu/+source/openssl/1.0.1-4ubunt... https://launchpad.net/ubuntu/+source/openssl/1.0.0e-2ubun... https://launchpad.net/ubuntu/+source/openssl/0.9.8k-7ubun... https://launchpad.net/ubuntu/+source/openssl/0.9.8g-4ubun... -- ubuntu-security-announce mailing list ubuntu-security-announce@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security...