CVE-2019-12677 (GCVE-0-2019-12677)
Vulnerability from cvelistv5
Published
2019-10-02 19:06
Modified
2024-11-21 19:12
Severity ?
7.7 (High) - CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CWE
Summary
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.
References
Impacted products
Vendor Product Version
Cisco Cisco Adaptive Security Appliance (ASA) Software Version: unspecified   < n/a
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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.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-172\", \"description\": \"CWE-172\"}]}], \"providerMetadata\": {\"orgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"shortName\": \"cisco\", \"dateUpdated\": \"2019-10-02T19:06:39\"}, \"x_legacyV4Record\": {\"impact\": {\"cvss\": {\"version\": \"3.0\", \"baseScore\": \"7.7\", \"vectorString\": \"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H\"}}, \"source\": {\"defect\": [[\"CSCux45179\"]], \"advisory\": \"cisco-sa-20191002-asa-ssl-vpn-dos\", \"discovery\": \"INTERNAL\"}, \"affects\": {\"vendor\": {\"vendor_data\": [{\"product\": {\"product_data\": [{\"version\": {\"version_data\": [{\"affected\": \"\u003c\", \"version_value\": \"n/a\", \"version_affected\": \"\u003c\"}]}, \"product_name\": \"Cisco Adaptive Security Appliance (ASA) Software\"}]}, \"vendor_name\": \"Cisco\"}]}}, \"exploit\": [{\"lang\": \"en\", \"value\": \"The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.\"}], \"data_type\": \"CVE\", \"references\": {\"reference_data\": [{\"url\": \"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191002-asa-ssl-vpn-dos\", \"name\": \"20191002 Cisco Adaptive Security Appliance Software SSL VPN Denial of Service Vulnerability\", \"refsource\": \"CISCO\"}]}, \"data_format\": \"MITRE\", \"description\": {\"description_data\": [{\"lang\": \"eng\", \"value\": \"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. 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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.\"}]}, \"problemtype\": {\"problemtype_data\": [{\"description\": [{\"lang\": \"eng\", \"value\": \"CWE-172\"}]}]}, \"data_version\": \"4.0\", \"CVE_data_meta\": {\"ID\": \"CVE-2019-12677\", \"STATE\": \"PUBLIC\", \"TITLE\": \"Cisco Adaptive Security Appliance Software SSL VPN Denial of Service Vulnerability\", \"ASSIGNER\": \"psirt@cisco.com\", \"DATE_PUBLIC\": \"2019-10-02T16:00:00-0700\"}}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2019-12677\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-11-21T19:12:40.210Z\", \"dateReserved\": \"2019-06-04T00:00:00\", \"assignerOrgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"datePublished\": \"2019-10-02T19:06:39.565459Z\", \"assignerShortName\": \"cisco\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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