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CVE-2011-3299: Cisco ASA and FWSM can crash from crafted SunRPC traffic

CVE-2011-3299 · published 15 years ago

Summary

Certain Cisco ASA 5500 devices, Catalyst 6500 ASA modules, and Cisco Firewall Services Modules can be forced to restart by a remote attacker who sends specially crafted SunRPC network traffic. This would interrupt network security and connectivity until the device is manually restarted. Apply the latest software updates from Cisco that fix the issue to prevent the forced reload.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software

Vendor	Product	Affected versions
cisco	adaptive_security_appliance_software	7.0 7.0\(0\) 7.0\(1\) 7.0\(2\) 7.0\(4\) 7.0\(5\) 7.0\(5.2\) 7.0\(6\) 7.0\(6.7\) 7.0\(7\) 7.0\(8\) 7.0.1 59 more version ranges `cpe:2.3:o:cisco:adaptive_security_appliance_software:7.0:::::::*`
cisco	5500_series_adaptive_security_appliance	All versions `cpe:2.3:h:cisco:5500_series_adaptive_security_appliance::::::::`
cisco	asa_5500	All versions `cpe:2.3:h:cisco:asa_5500::::::::`
cisco	firewall_services_module_software	3.1 3.1\(2\) 3.1\(3\) 3.1\(4\) 3.1\(5\) 3.1\(6\) 3.1\(7\) 3.1\(8\) 3.1\(9\) 3.1\(10\) 3.1\(11\) 3.1\(12\) 52 more version ranges `cpe:2.3:a:cisco:firewall_services_module_software:3.1:::::::*`
cisco	catalyst_6500	All versions `cpe:2.3:h:cisco:catalyst_6500::::::::`
cisco	catalyst_7600	All versions `cpe:2.3:h:cisco:catalyst_7600::::::::`

Original advisory text

Cisco Adaptive Security Appliances (ASA) 5500 series devices, and the ASA Services module in Cisco Catalyst 6500 series devices, with software 7.0 before 7.0(8.13), 7.1 and 7.2 before 7.2(5.4), 8.0 before 8.0(5.25), 8.1 and 8.2 before 8.2(5.11), 8.3 before 8.3(2.23), 8.4 before 8.4(2.6), and 8.5 before 8.5(1.1) and Cisco Firewall Services Module (aka FWSM) 3.1 before 3.1(21), 3.2 before 3.2(22), 4.0 before 4.0(16), and 4.1 before 4.1(7) allow remote attackers to cause a denial of service (device reload) via crafted SunRPC traffic, aka Bug IDs CSCto92380 and CSCtq09972.

References

http://www.cisco.com/warp/public/707/cisco-sa-20111005-asa.shtml Vendor Advisory
http://www.cisco.com/warp/public/707/cisco-sa-20111005-fwsm.shtml Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/70330

Fix within

Internet-facing 14 days

Internal 60 days

Not known to be exploited
Can be exploited automatically (estimated)
Gives an attacker partial control (estimated)

Severity

7.8 High

Exploitation

2% chance of attack within 30 days

Type

CWE-399Resource Management Errors

Timeline

Published6 Oct 2011

Updated3 Nov 2026

First seen29 Sep 2026

Sources

CVE-2011-3299 · NVD

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