Vulnerability CVE-2015-6418
Published: 2015-12-12   Modified: 2015-12-13

Description:
The random-number generator on Cisco Small Business RV routers 4.x and SA500 security appliances 2.2.07 does not have sufficient entropy, which makes it easier for remote attackers to determine a TLS key pair via unspecified computations upon handshake key-exchange data, aka Bug ID CSCus15224.

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
Cisco -> Rv016 multi-wan vpn firmware 
Cisco -> Rv042 dual wan vpn router firmware 
Cisco -> Rv042g dual gigabit wan vpn firmware 
Cisco -> Rv082 dual wan vpn router firmware 
Cisco -> Sa520 
Cisco -> Sa520w 
Cisco -> Sa540 

 References:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151210-dwvr
http://www.securityfocus.com/bid/78876
http://www.securitytracker.com/id/1034408
http://www.securitytracker.com/id/1034409
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