CVE-2015-4217
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. Limited direct impact.
- Exploit odds
- 2.2% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 2.2% in the next 30 days (EPSS).
- Severity: 4.3 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 2.2% · EPSS, next 30 days
- Weakness
- CWE-200 · Information exposure
- Record status
- Modified
Affected
- 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
Attack profile CVSS 2.0 · 4.3
- Attack vector
- Network
- Complexity
- Medium
- Authentication
- None
- Confidentiality
- Partial
- Integrity
- None
- Availability
- None
Raw vector
AV:N/AC:M/Au:N/C:P/I:N/A:N
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2015-4217.md and follow it. Check whether this project is affected by CVE-2015-4217. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150625-ironport
- http://tools.cisco.com/security/center/viewAlert.x?alertId=39461
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150625-ironport
- http://tools.cisco.com/security/center/viewAlert.x?alertId=39461
References
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150625-ironport
- http://tools.cisco.com/security/center/viewAlert.x?alertId=39461
- http://www.securityfocus.com/bid/75418
- http://www.securitytracker.com/id/1032725
- http://www.securitytracker.com/id/1032726
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150625-ironport
- http://tools.cisco.com/security/center/viewAlert.x?alertId=39461
- http://www.securityfocus.com/bid/75418
- http://www.securitytracker.com/id/1032725
- http://www.securitytracker.com/id/1032726