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Cisco StarOS for Cisco ASR 5000 Series HTTP Packet Processing Denial of Service Vulnerability

Cisco-SA-20150429-CVE-2015-0712 · Medium · Published · Updated

A vulnerability in HTTP packet processing of Cisco StarOS for Cisco ASR 5000 Series devices could allow an unauthenticated, remote attacker to cause a reload of the session manager service on the affected device.   The vulnerability is due to improper processing of malformed HTTP packets. An attacker could exploit this vulnerability by sending a number of malformed HTTP packets to the affected device. An exploit could allow the attacker to cause the session manager service on the device to reload. A reload of the session manager service may cause loss of packets during a recovery period, resulting in a denial of service (DoS) condition. Cisco has confirmed the vulnerability and released software updates. To exploit this vulnerability, an attacker may need access to trusted, internal networks to send malformed HTTP packets to the affected device. This access requirement may reduce the likelihood of a successful exploit. Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.

Cisco advisory ·CSAF JSON

Workarounds

Administrators are advised to apply the appropriate updates.

Administrators are advised to allow only trusted users to have network access.

Administrators can help protect affected systems from external attacks by using a solid firewall strategy.

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 affected systems.

CVEsCVE-2015-0712
Cisco Bug IDsCSCud14217
CVSS ScoreBase 5.0
Base 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P/E:F/RL:OF/RC:C
Product Names From Source
Cisco ASR 5000 Series Software

CSAF Product Statuses

Product Status Source CVE Rows
Cisco ASR 5000 Series Software known_affected cisco_csaf CVE-2015-0712 1

Related Products

Product CVE Evidence
Cisco ASR 5000 Series Software CVE-2015-0712 Cisco OpenVuln · family-level