A patch introduced a signedness bug causing any program compiled against the vulnerable version of eglibc and using optimized functions such as memcpy_ssse3 and memcpy-ssse3-back to be potentially vulnerable to unexpected code execution.
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Ubuntu Security Notice 1396-1 - It was discovered that the GNU C Library did not properly handle integer overflows in the timezone handling code. An attacker could use this to possibly execute arbitrary code by convincing an application to load a maliciously constructed tzfile. It was discovered that the GNU C Library did not properly handle passwd.adjunct.byname map entries in the Network Information Service (NIS) code in the name service caching daemon (nscd). An attacker could use this to obtain the encrypted passwords of NIS accounts. This issue only affected Ubuntu 8.04 LTS. Various other issues were also addressed.
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