Ubuntu Security Notice 3685-1 - Some of these CVEs were already addressed in previous USN: 3439-1, 3553-1, 3528-1. It was discovered that Ruby incorrectly handled certain inputs. An attacker could use this to cause a buffer overrun. It was discovered that Ruby incorrectly handled certain files. An attacker could use this to overwrite any file on the filesystem. Various other issues were also addressed.
60f255fcb7dd889a143694b47735ea1ee2e3231d8c3486947620ea6096bc226b