This security advisory describes one medium risk vulnerability.
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper validation of user-supplied requests to the web-based management interface. A remote authenticated attacker can send a specially crafted request and cause the device to stop responding, requiring manual intervention for recovery.Mitigation
Install updates from vendor's website.Vulnerable software versions
Cisco Small Business Voice Gateways and ATAs: 1.3.2, 1.3.2(XU), 1.3.2n, 1.3.2p, 1.3.3, 1.3.5, 1.3.5(XU), 1.3.5p, 1.3.5p(XU), 1.4.0, 1.4.1, 1.4.1 SR1, 1.4.1 SR3CPE
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.