Integer overflow in Randombit Botan

1) Integer overflow

EUVDB-ID: #VU39767

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-9132

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

In Botan 1.8.0 through 1.11.33, when decoding BER data an integer overflow could occur, which would cause an incorrect length field to be computed. Some API callers may use the returned (incorrect and attacker controlled) length field in a way which later causes memory corruption or other failure.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Botan: 1.8.0 - 1.11.33

External links

http://www.securityfocus.com/bid/95879
http://github.com/randombit/botan/commit/987ad747db6d0d7e36f840398f3cf02e2fbfd90f
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4OUDGVRQYQUL7F5MRP3LAV7EHRJG4BBE/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Z2Y3JLMTE3VIV4X5X6SXVZTJBDDLCS3D/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.