Vulnerability Name:

CVE-2015-6321 (CCN-107834)

Assigned:2015-11-04
Published:2015-11-04
Updated:2016-12-07
Summary:Cisco AsyncOS before 8.5.7-042, 9.x before 9.1.0-032, 9.1.x before 9.1.1-023, and 9.5.x and 9.6.x before 9.6.0-042 on Email Security Appliance (ESA) devices; before 9.1.0-032, 9.1.1 before 9.1.1-005, and 9.5.x before 9.5.0-025 on Content Security Management Appliance (SMA) devices; and before 7.7.0-725 and 8.x before 8.0.8-113 on Web Security Appliance (WSA) devices allows remote attackers to cause a denial of service (memory consumption) via a flood of TCP packets, aka Bug IDs CSCus79774, CSCus79777, and CSCzv95795.
CVSS v3 Severity:7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:7.8 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-399
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2015-6321

Source: CCN
Type: Cisco Security Advisory cisco-sa-20151104-aos
Cisco AsyncOS TCP Flood Denial of Service Vulnerability

Source: CISCO
Type: Vendor Advisory
20151104 Cisco AsyncOS TCP Flood Denial of Service Vulnerability

Source: SECTRACK
Type: UNKNOWN
1034060

Source: SECTRACK
Type: UNKNOWN
1034061

Source: XF
Type: UNKNOWN
cisco-asyncos-cve20156321-dos(107834)

Vulnerable Configuration:Configuration 1:
  • cpe:/a:cisco:web_security_appliance:5.6.0-623:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:web_security_appliance:6.0.0-000:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:web_security_appliance:7.5.0-000:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:web_security_appliance:7.5.0-825:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:web_security_appliance:7.5.1-000:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:web_security_appliance:7.5.2-000:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:web_security_appliance:7.7.0-000:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:web_security_appliance:7.7.1-000:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:web_security_appliance:8.0.0-000:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:web_security_appliance:8.5.0.000:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/a:cisco:content_security_management_appliance:7.8.0-328:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:content_security_management_appliance:7.8.1-001:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:content_security_management_appliance:7.9.0-201:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:content_security_management_appliance:7.9.2-116:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:content_security_management_appliance:8.0.1-031:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:content_security_management_appliance:8.1.0-001:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:content_security_management_appliance:8.1.1-033:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:content_security_management_appliance:8.1.2-000:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:content_security_management_appliance:8.2.0-238:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:content_security_management_appliance:8.3.0-350:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:content_security_management_appliance:8.3.5-061:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:content_security_management_appliance:8.3.6-014:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:content_security_management_appliance:8.3.7-010:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:content_security_management_appliance:8.4.0-150:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:content_security_management_appliance:9.0.0-073:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:content_security_management_appliance:9.1.0-004:*:*:*:*:*:*:*

    • Configuration 3:
  • cpe:/a:cisco:email_security_appliance:7.6.1-000:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:email_security_appliance:7.6.3-000:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:email_security_appliance:7.7.0-000:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:email_security_appliance:7.7.1-000:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:email_security_appliance:7.8.0-311:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:email_security_appliance:8.5.6-052:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:email_security_appliance:8.6.0-011:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:email_security_appliance:8.9.1-000:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:email_security_appliance:8.9.2-032:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:email_security_appliance:9.0.0-212:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:email_security_appliance:9.0.5-000:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:email_security_appliance:9.1.0-011:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:email_security_appliance:9.4.4-000:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:email_security_appliance:9.5.0-000:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:cisco:asyncos:7.1.1:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    cisco web security appliance 5.6.0-623
    cisco web security appliance 6.0.0-000
    cisco web security appliance 7.5.0-000
    cisco web security appliance 7.5.0-825
    cisco web security appliance 7.5.1-000
    cisco web security appliance 7.5.2-000
    cisco web security appliance 7.7.0-000
    cisco web security appliance 7.7.1-000
    cisco web security appliance 8.0.0-000
    cisco web security appliance 8.5.0.000
    cisco content security management appliance 7.8.0-328
    cisco content security management appliance 7.8.1-001
    cisco content security management appliance 7.9.0-201
    cisco content security management appliance 7.9.2-116
    cisco content security management appliance 8.0.1-031
    cisco content security management appliance 8.1.0-001
    cisco content security management appliance 8.1.1-033
    cisco content security management appliance 8.1.2-000
    cisco content security management appliance 8.2.0-238
    cisco content security management appliance 8.3.0-350
    cisco content security management appliance 8.3.5-061
    cisco content security management appliance 8.3.6-014
    cisco content security management appliance 8.3.7-010
    cisco content security management appliance 8.4.0-150
    cisco content security management appliance 9.0.0-073
    cisco content security management appliance 9.1.0-004
    cisco email security appliance 7.6.1-000
    cisco email security appliance 7.6.3-000
    cisco email security appliance 7.7.0-000
    cisco email security appliance 7.7.1-000
    cisco email security appliance 7.8.0-311
    cisco email security appliance 8.5.6-052
    cisco email security appliance 8.6.0-011
    cisco email security appliance 8.9.1-000
    cisco email security appliance 8.9.2-032
    cisco email security appliance 9.0.0-212
    cisco email security appliance 9.0.5-000
    cisco email security appliance 9.1.0-011
    cisco email security appliance 9.4.4-000
    cisco email security appliance 9.5.0-000
    cisco asyncos 7.1.1