Advisory Published

USN-3372-1: NSS vulnerability

First published: Mon Jul 31 2017(Updated: )

It was discovered that NSS incorrectly handled certain empty SSLv2 messages. A remote attacker could possibly use this issue to cause NSS to crash, resulting in a denial of service. (CVE-2017-7502) 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 causes NSS to limit use of the same symmetric key. (CVE-2016-2183) It was discovered that NSS incorrectly handled Base64 decoding. A remote attacker could use this flaw to cause NSS to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2017-5461)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/libnss3<2:3.28.4-0ubuntu0.12.04.1
2:3.28.4-0ubuntu0.12.04.1
Ubuntu gir1.2-packagekitglib-1.0=12.04

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