Candidate: CVE-2016-2195
PublicDate: 2016-05-13 14:59:00 UTC
References:
 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2195
 http://botan.randombit.net/security.html
Description:
 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.
Ubuntu-Description:
Notes:
 seth-arnold> "Introduced in 1.9.18, fixed in 1.11.27 and 1.10.11"
Bugs:
Priority: medium
Discovered-by: Alex Gaynor
Assigned-to:
CVSS:
 nvd: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H [9.8 CRITICAL]

Patches_botan1.10:
upstream_botan1.10: released (1.10.12-1)
precise_botan1.10: ignored (reached end-of-life)
precise/esm_botan1.10: DNE (precise was needed)
trusty_botan1.10: released (1.10.5-1+deb7u1ubuntu0.14.04.1)
trusty/esm_botan1.10: DNE (trusty was released [1.10.5-1+deb7u1ubuntu0.14.04.1])
vivid/stable-phone-overlay_botan1.10: DNE
vivid/ubuntu-core_botan1.10: DNE
wily_botan1.10: ignored (reached end-of-life)
xenial_botan1.10: not-affected (1.10.12-1)
yakkety_botan1.10: not-affected (1.10.12-1)
zesty_botan1.10: not-affected (1.10.12-1)
devel_botan1.10: not-affected (1.10.12-1)