USN-2537-1: OpenSSL vulnerabilities
19 March 2015
openssl vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.10
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS
Summary
Several security issues were fixed in OpenSSL.
Software Description
- openssl - Secure Socket Layer (SSL) cryptographic library and tools
Details
It was discovered that OpenSSL incorrectly handled malformed EC private key files. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service, or execute arbitrary code. (CVE-2015-0209)
Stephen Henson discovered that OpenSSL incorrectly handled comparing ASN.1 boolean types. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2015-0286)
Emilia Käsper discovered that OpenSSL incorrectly handled ASN.1 structure reuse. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service, or execute arbitrary code. (CVE-2015-0287)
Brian Carpenter discovered that OpenSSL incorrectly handled invalid certificate keys. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2015-0288)
Michal Zalewski discovered that OpenSSL incorrectly handled missing outer ContentInfo when parsing PKCS#7 structures. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service, or execute arbitrary code. (CVE-2015-0289)
Robert Dugal and David Ramos discovered that OpenSSL incorrectly handled decoding Base64 encoded data. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service, or execute arbitrary code. (CVE-2015-0292)
Sean Burford and Emilia Käsper discovered that OpenSSL incorrectly handled specially crafted SSLv2 CLIENT-MASTER-KEY messages. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2015-0293)
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 14.10
- libssl1.0.0 - 1.0.1f-1ubuntu9.4
- Ubuntu 14.04 LTS
- libssl1.0.0 - 1.0.1f-1ubuntu2.11
- Ubuntu 12.04 LTS
- libssl1.0.0 - 1.0.1-4ubuntu5.25
- Ubuntu 10.04 LTS
- libssl0.9.8 - 0.9.8k-7ubuntu8.27
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to reboot your computer to make all the necessary changes.