Vulnerability CVE-2016-9939


Published: 2017-01-30   Modified: 2017-01-31

Description:
Crypto++ (aka cryptopp and libcrypto++) 5.6.4 contained a bug in its ASN.1 BER decoding routine. The library will allocate a memory block based on the length field of the ASN.1 object. If there is not enough content octets in the ASN.1 object, then the function will fail and the memory block will be zeroed even if its unused. There is a noticeable delay during the wipe for a large allocation.

Type:

CWE-20

(Improper Input Validation)

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Debian -> Debian linux 
Cryptopp -> Crypto++ 

 References:
http://www.debian.org/security/2016/dsa-3748
http://www.openwall.com/lists/oss-security/2016/12/12/7
http://www.securityfocus.com/bid/94854
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7IL5A6465IEPW5GAWGXB2ENJPFYVWTJM/

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