CVE-2010-4679

Severity: high (CVSS 7.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-01-07 · updated 2026-06-16
Weakness: CWE-20

Description

Cisco Adaptive Security Appliances (ASA) 5500 series devices with software before 8.2(3) do not properly handle Online Certificate Status Protocol (OCSP) connection failures, which allows remote OCSP responders to cause a denial of service (TCP socket exhaustion) by rejecting connection attempts, aka Bug ID CSCsz36816.

Affected products

Cisco 5500 Series Adaptive Security Appliance: all versions
Cisco ASA Software: through 8.2\(2\); 7.0, 7.0(0), 7.0(2), 7.0(4), 7.0(5), 7.0(5.2) (+49)
Cisco Asa 5500: all versions

References

http://secunia.com/advisories/42931
http://www.cisco.com/en/US/docs/security/asa/asa82/release/notes/asarn82.pdf
http://www.securityfocus.com/bid/45767
http://www.securitytracker.com/id?1024963
https://exchange.xforce.ibmcloud.com/vulnerabilities/64605
http://secunia.com/advisories/42931
http://www.cisco.com/en/US/docs/security/asa/asa82/release/notes/asarn82.pdf
http://www.securityfocus.com/bid/45767
http://www.securitytracker.com/id?1024963
https://exchange.xforce.ibmcloud.com/vulnerabilities/64605

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