Ubuntu Security Notice 5553-1 - It was discovered that libjpeg-turbo was not properly handling EOF characters, which could lead to excessive memory consumption through the execution of a large loop. An attacker could possibly use this issue to cause a denial of service. It was discovered that libjpeg-turbo was not properly performing bounds check operations, which could lead to a heap-based buffer overread. If a user or automated system were tricked into opening a specially crafted file, an attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 ESM.
4e135a6155a1d14aa6894601823a2eb064d3b15e7f83a90a56f73977ea7ed49cUbuntu Security Notice 5497-1 - It was discovered that Libjpeg6b was not properly performing bounds checks when compressing PPM and Targa image files. An attacker could possibly use this issue to cause a denial of service. Chijin Zhou discovered that Libjpeg6b was incorrectly handling the EOF character in input data when generating JPEG files. An attacker could possibly use this issue to force the execution of a large loop, force excessive memory consumption, and cause a denial of service.
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