Cisco Security Advisory
Cisco 8800 Series IP Phone Filesystem Permission Enforcement Unauthorized Access Vulnerability
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AV:L/AC:H/Au:S/C:C/I:C/A:C/E:F/RL:OF/RC:C
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A vulnerability in the mounted filesystem of Cisco 8800 Series IP Phones could allow an authenticated, remote attacker to access any file, including the right to change the file mode, on a targeted device.
The vulnerability is due to insufficient enforcement of filesystem permissions. An attacker could exploit this vulnerability by leveraging another exploit that allows the attacker to gain access to an unprivileged shell. A successful exploit could allow the attacker to modify or replace existing system files with malicious files.
Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160620-ipp
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There are no workarounds that address this vulnerability.
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Cisco provides information about fixed software in Cisco bugs, which are accessible through the Cisco Bug Search Tool.
When considering software upgrades, customers are advised to consult the Cisco Security Advisories and Responses archive at http://www.cisco.com/go/psirt and review subsequent advisories to determine exposure and a complete upgrade solution.
In all cases, customers should ensure that the devices to upgrade contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.
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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 public release. - Final 2016-June-20
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