UBUNTU-CVE-2016-2195

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UBUNTU-CVE-2016-2195

Summary:

Details: Integer overflow in the PointGFp constructor in Botan before 1.10.11 and 1.11.x before 1.11.27 allows remote attackers to overwrite memory and possibly execute arbitrary code via a crafted ECC point, which triggers a heap-based buffer overflow. The bigint_mul and bigint_sqr functions received the size of the output buffer, but only used it to dispatch to a faster algorithm in cases where there was sufficient output space to call an unrolled multiplication function. The result is a heap overflow accessible via ECC point decoding, which accepted untrusted inputs. This is likely exploitable for remote code execution.

References: https://ubuntu.com/security/CVE-2016-2195, http://botan.randombit.net/security.html, https://www.cve.org/CVERecord?id=CVE-2016-2195