Vulnerability Name:

CVE-2015-4217 (CCN-104073)

Assigned:2015-06-25
Published:2015-06-25
Updated:2016-12-28
Summary:The remote-support feature on Cisco Web Security Virtual Appliance (WSAv), Email Security Virtual Appliance (ESAv), and Security Management Virtual Appliance (SMAv) devices before 2015-06-25 uses the same default SSH host keys across different customers' installations, which makes it easier for remote attackers to defeat cryptographic protection mechanisms by leveraging knowledge of a private key from another installation, aka Bug IDs CSCus29681, CSCuu95676, and CSCuu96601.
CVSS v3 Severity:6.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)
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): Low
Integrity (I): Low
Availibility (A): None
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N)
3.2 Low (Temporal CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
5.8 Medium (CCN CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:P/A:N)
4.3 Medium (CCN Temporal CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:P/A:N/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): None
Vulnerability Type:CWE-310
CWE-200
Vulnerability Consequences:Bypass Security
References:Source: MITRE
Type: CNA
CVE-2015-4217

Source: CCN
Type: Cisco Security Advisory ID: cisco-sa-20150625-ironport
Multiple Default SSH Keys Vulnerabilities in Cisco Virtual WSA, ESA, and SMA

Source: CISCO
Type: Vendor Advisory
20150625 Multiple Default SSH Keys Vulnerabilities in Cisco Virtual WSA, ESA, and SMA

Source: CCN
Type: Cisco Vulnerability Alert 39461
Cisco Virtual WSA, ESA, and SMA Default SSH Host Keys Vulnerability

Source: CISCO
Type: Vendor Advisory
20150625 Cisco Virtual WSA, ESA, and SMA Default SSH Host Keys Vulnerability

Source: BID
Type: Third Party Advisory, VDB Entry
75418

Source: SECTRACK
Type: Third Party Advisory, VDB Entry
1032725

Source: SECTRACK
Type: Third Party Advisory, VDB Entry
1032726

Source: XF
Type: UNKNOWN
cisco-virtual-cve20154217-sec-bypass(104073)

Vulnerable Configuration:Configuration 1:
  • cpe:/a:cisco:content_security_management_virtual_appliance:8.4.0.0150:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:content_security_management_virtual_appliance:9.0.0.087:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:email_security_virtual_appliance:8.0.0:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:email_security_virtual_appliance:8.5.6:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:email_security_virtual_appliance:8.5.7:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:email_security_virtual_appliance:9.0.0:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:web_security_virtual_appliance:7.7.5:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:web_security_virtual_appliance:8.0.5:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:web_security_virtual_appliance:8.5.0:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:web_security_virtual_appliance:8.5.1:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:web_security_virtual_appliance:8.6.0:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:web_security_virtual_appliance:8.7.0:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:cisco:web_security_appliance_(wsa):5.6.0-623:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    cisco content security management virtual appliance 8.4.0.0150
    cisco content security management virtual appliance 9.0.0.087
    cisco email security virtual appliance 8.0.0
    cisco email security virtual appliance 8.5.6
    cisco email security virtual appliance 8.5.7
    cisco email security virtual appliance 9.0.0
    cisco web security virtual appliance 7.7.5
    cisco web security virtual appliance 8.0.5
    cisco web security virtual appliance 8.5.0
    cisco web security virtual appliance 8.5.1
    cisco web security virtual appliance 8.6.0
    cisco web security virtual appliance 8.7.0
    cisco web security appliance (wsa) 5.6.0-623