Cisco Security Agent (CSA) bypass buffer overflow protection
| csa-buffer-protection-bypass (18037) |  Medium Risk |
Description:
Cisco Security Agent (CSA) could allow a remote attacker to bypass the buffer overflow protection functionality. If the victim is logged in, a remote attacker could perform two buffer overflow attacks within a specific period of time, which would allow the second buffer overflow attack to bypass the CSA protection. This could allow an attacker to gain unauthorized access to the system with elevated privileges.
Platforms Affected:
- Cisco, Security Agent 3
- Cisco, Security Agent 4.0
- Cisco, Security Agent 4.0.1
- Cisco, Security Agent 4.0.2
- Cisco, Security Agent 4.0.3
Remedy:
Upgrade to the latest version of Cisco Security Agent (4.0.3.728 or later), as listed in Cisco Security Advisory 2004 November 11 1600 UTC (GMT).
Consequences:
Bypass Security
References:
- CIAC Information Bulletin P-036, Crafted Timed Attack Evades Cisco Security Agent Protections at http://www.ciac.org/ciac/bulletins/p-036.shtml.
- Cisco Security Advisory 2004 November 11 1600 UTC (GMT), Crafted Timed Attack Evades Cisco Security Agent Protections at http://www.cisco.com/warp/public/707/cisco-sa-20041111-csa.shtml.
- Cisco Systems, Inc. Web site, Cisco Security Agent at http://www.cisco.com/en/US/products/sw/secursw/ps5057/products_data_sheet09186a008033a40f.html.
- BID-11659: Cisco Security Agent Buffer Overflow Protection Bypass Vulnerability
- CVE-2004-1112: The buffer overflow trigger in Cisco Security Agent (CSA) before 4.0.3 build 728 waits five minutes for a user response before terminating the process, which could allow remote attackers to bypass the buffer overflow protection by sending additional buffer overflow attacks within the five minute timeout period.
Reported:
Nov 11, 2004
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