Executive Summary

Informations
Name CVE-2019-12677 First vendor Publication 2019-10-02
Vendor Cve Last vendor Modification 2022-05-25

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Overall CVSS Score 6.5
Base Score 6.5 Environmental Score 6.5
impact SubScore 3.6 Temporal Score 6.5
Exploitabality Sub Score 2.8
 
Attack Vector Network Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:S/C:N/I:N/A:P)
Cvss Base Score 4 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 8 Authentication Requires single instance
Calculate full CVSS 2.0 Vectors scores

Detail

A 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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12677

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-755 Improper Handling of Exceptional Conditions

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 10
Application 434
Hardware 24
Os 34
Os 1

Sources (Detail)

Source Url
CISCO https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-s...

Alert History

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Date Informations
2022-11-22 12:44:46
  • Multiple Updates
2022-10-11 12:48:14
  • Multiple Updates
2022-10-11 01:16:01
  • Multiple Updates
2022-05-27 09:27:39
  • Multiple Updates
2022-05-26 00:27:36
  • Multiple Updates
2022-05-25 21:27:32
  • Multiple Updates
2020-05-23 02:22:18
  • Multiple Updates
2019-10-09 21:20:47
  • Multiple Updates
2019-10-03 00:19:39
  • First insertion