CVE-2019-12677

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Summary

CVECVE-2019-12677
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-10-02 19:15:00 UTC
Updated2023-08-16 16:17:00 UTC
DescriptionA vulnerability in the Secure Sockets Layer (SSL) VPN feature of Cisco Adaptive Security Appliance (ASA) Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition that prevents the creation of new SSL/Transport Layer Security (TLS) connections to an affected device. The vulnerability is due to incorrect handling of Base64-encoded strings. An attacker could exploit this vulnerability by opening many SSL VPN sessions to an affected device. The attacker would need to have valid user credentials on the affected device to exploit this vulnerability. A successful exploit could allow the attacker to overwrite a special system memory location, which will eventually result in memory allocation errors for new SSL/TLS sessions to the device, preventing successful establishment of these sessions. A reload of the device is required to recover from this condition. Established SSL/TLS connections to the device and SSL/TLS connections through the device are not affected. Note: Although this vulnerability is in the SSL VPN feature, successful exploitation of this vulnerability would affect all new SSL/TLS sessions to the device, including management sessions.

Risk And Classification

Problem Types: CWE-755

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Cisco Adaptive Security Appliance All All All All
Application Cisco Adaptive Security Appliance All All All All
Application Cisco Adaptive Security Appliance Software All All All All
Operating System Cisco Adaptive Security Appliance Software All All All All
Hardware Cisco Asa 5505 - All All All
Hardware Cisco Asa 5505 - All All All
Hardware Cisco Asa 5510 - All All All
Hardware Cisco Asa 5510 - All All All
Hardware Cisco Asa 5512-x - All All All
Hardware Cisco Asa 5512-x - All All All
Hardware Cisco Asa 5515-x - All All All
Hardware Cisco Asa 5515-x - All All All
Hardware Cisco Asa 5520 - All All All
Hardware Cisco Asa 5520 - All All All
Hardware Cisco Asa 5525-x - All All All
Hardware Cisco Asa 5525-x - All All All
Hardware Cisco Asa 5550 - All All All
Hardware Cisco Asa 5550 - All All All
Hardware Cisco Asa 5555-x - All All All
Hardware Cisco Asa 5555-x - All All All
Hardware Cisco Asa 5580 - All All All
Hardware Cisco Asa 5580 - All All All
Hardware Cisco Asa 5585-x - All All All
Hardware Cisco Asa 5585-x - All All All

References

ReferenceSourceLinkTags
Cisco Adaptive Security Appliance Software SSL VPN Denial of Service Vulnerability CISCO tools.cisco.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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