Vulnslist

find the latest Cisco vulnerabilities

Cisco Web Security Appliance HTTP Proxy Bypass Vulnerability

Cisco-SA-20150220-CVE-2015-0628 · Medium · Published · Updated

A vulnerability in the proxy engine of the Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to bypass the security restriction. The vulnerability is due to improper handling of malformed HTTP methods. An attacker could exploit this vulnerability by crafting an improper HTTP method. An exploit could allow the attacker to circumvent the WSA's ability to prevent proxied network traffic. Cisco has confirmed the vulnerability in a security notice; however, software updates are not available. To exploit this vulnerability, an attacker may need access to trusted, internal networks behind a firewall to send malformed HTTP methods to the targeted 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 contact the vendor regarding future updates and releases.

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-2015-0628
Cisco Bug IDsCSCus79174
CVSS ScoreBase 5.0
Base 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N/E:F/RL:U/RC:C
Product Names From Source
Cisco Web Security Appliance (WSA), Cisco Secure Web Appliance

Related Products

Product CVE Evidence
Cisco Web Security Appliance (WSA) CVE-2015-0628 Cisco OpenVuln
Cisco Secure Web Appliance CVE-2015-0628 Cisco OpenVuln