Cisco Unity Connection contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service condition. Updates are not available.
Description
Cisco Unity Connection contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.
The vulnerability is due to the improper handling of user-supplied requests by the affected software. An unauthenticated, remote attacker could exploit this vulnerability by sending crafted requests to an affected system. The processing of such requests could cause a DoS condition, denying access to legitimate users.
Cisco has confirmed the vulnerability; however, software updates are not available.
Warning Indicators
Cisco Unity Connection versions 9.1(1) and prior are vulnerable.
IntelliShield Analysis
To exploit this vulnerability, an attacker would need access to trusted, internal networks to submit malicious requests to the targeted system. This access requirement decreases the likelihood of a successful exploit.
Vendor Announcements
Cisco has released a security notice for bug ID CSCud59736 at the following link: CVE-2013-1129
Impact
An unauthenticated, remote attacker could exploit this vulnerability to cause a memory leak in a critical process, causing the process to crash and resulting in a DoS condition.
Technical Information
The vulnerability is due to improper handling of TCP sessions by the affected software.
An unauthenticated, remote attacker could exploit this vulnerability by sending a sequence of crafted TCP requests. Processing the requests could trigger a memory leak in a critical process, which could cause the process to crash and result in a DoS condition.
Safeguards
Administrators are advised to contact the vendor regarding future updates and releases.
Administrators are advised to run both firewall and antivirus applications to minimize the potential of inbound and outbound threats.
Administrators are advised to allow only trusted users to have network access.
Administrators are advised to monitor affected systems.
The security vulnerability applies to the following combinations of products.
Primary Products:
Cisco
Cisco Unity Connection
9.0 (1) | 9.1 (1)
Associated Products:
N/A
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