Cisco Security Advisory
Cisco RVS4000 and WRVS4400N Gigabit Security Routers Firmware SSL Key Disclosure Vulnerability
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AV:N/AC:L/Au:N/C:N/I:P/A:N/E:F/RL:OF/RC:C
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The firmware of Cisco RVS4000 4-port Gigabit Security Routers and WRVS4400N Wireless-N Gigabit Security Routers contains a vulnerability that could allow an unauthenticated, remote attacker to access sensitive information from a targeted device.
The vulnerability is due to improper security protections on SSL certificate private keys on affected devices. An unauthenticated, remote could exploit this vulnerability to retrieve SSL certificate key information from a targeted device. If successful, the attacker could access sensitive information that could be used in further attacks.
Cisco has confirmed this vulnerability and has released updated software.
Unless remote management capabilities are enabled, an attacker could only exploit this vulnerability from internal networks, limiting the potential for exploitation. Remote management is disabled by default.
Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.
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Cisco has re-released a security advisory for Cisco bug ID CSCtn23871 at the following link: cisco-sa-20110525-rvs4000
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Administrators are advised to apply the appropriate updates.
Administrators are advised to remove backup files from affected devices.
Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.
Administrators are advised to monitor critical systems.
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Cisco customers with active contracts can obtain updates through the Software Center at the following link: Cisco. Cisco customers without contracts can obtain upgrades by contacting the Cisco Technical Assistance Center at 1-800-553-2447 or 1-408-526-7209 or via e-mail at tac@cisco.com.
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The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
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To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
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Show LessVersion Description Section Status Date 1.0 Initial Release NA Final 2011-May-25
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