Ubuntu Security Notice 4201-1 - It was discovered that Ruby incorrectly handled certain files. An attacker could possibly use this issue to pass path matching what can lead to an unauthorized access. It was discovered that Ruby incorrectly handled certain regular expressions. An attacker could use this issue to cause a denial of service. It was discovered that Ruby incorrectly handled certain HTTP headers. An attacker could possibly use this issue to execute arbitrary code. Various other issues were also addressed.
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