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CVE-2016-2195

Published: 13 May 2016

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.

Priority

Medium

CVSS 3 base score: 9.8

Status

Package Release Status
botan1.10
Launchpad, Ubuntu, Debian
Upstream
Released (1.10.12-1)
Ubuntu 16.04 ESM (Xenial Xerus) Not vulnerable
(1.10.12-1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was released [1.10.5-1+deb7u1ubuntu0.14.04.1])