Cisco Web Security Appliance SSH Host Key cryptographic issue

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Cisco Web Security Appliance. This issue affects some unknown processing of the component SSH Host Key Handler. The manipulation leads to cryptographic issue. This vulnerability is documented as CVE-2015-4217. There is not any exploit available.

Detailsinfo

A vulnerability was found in Cisco Web Security Appliance (Anti-Malware Software) (affected version unknown) and classified as critical. This issue affects an unknown functionality of the component SSH Host Key Handler. The manipulation with an unknown input leads to a cryptographic issue vulnerability. Using CWE to declare the problem leads to CWE-310. Impacted is confidentiality, and integrity.

The weakness was released 06/25/2015 with Cisco as 39461 as confirmed vulnerability alert (Website). It is possible to read the advisory at tools.cisco.com. The identification of this vulnerability is CVE-2015-4217 since 06/04/2015. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1600 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 84500 (Cisco Ironport Security Appliance Default Host Key Vulnerability), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO. The commercial vulnerability scanner Qualys is able to test this issue with plugin 43030 (Cisco Virtual WSA, ESA, and SMA Multiple Default SSH Keys Vulnerabilities (cisco-sa-20150625-ironport)).

The vulnerability is also documented in the databases at X-Force (104073), Tenable (84500), SecurityFocus (BID 75418†) and Vulnerability Center (SBV-50725†). Entry connected to this vulnerability is available at VDB-76090. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.5
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Cryptographic issue
CWE: CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 84500
Nessus Name: Cisco Ironport Security Appliance Default Host Key Vulnerability
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 103052
OpenVAS Name: Multiple Cisco Products Default SSH Host Keys Security Bypass Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/04/2015 🔍
06/25/2015 +21 days 🔍
06/25/2015 +0 days 🔍
06/26/2015 +1 days 🔍
06/26/2015 +0 days 🔍
06/26/2015 +0 days 🔍
06/28/2015 +2 days 🔍
05/21/2022 +2519 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: 39461
Organization: Cisco
Status: Confirmed

CVE: CVE-2015-4217 (🔍)
GCVE (CVE): GCVE-0-2015-4217
GCVE (VulDB): GCVE-100-76091
X-Force: 104073 - Cisco Web Security Virtual Appliance security bypass
SecurityFocus: 75418 - Multiple Cisco Products CVE-2015-4217 Default SSH Host Keys Security Bypass Vulnerability
SecurityTracker: 1032725
Vulnerability Center: 50725 - [cisco-sa-20150625-ironport] Cisco WSAv, ESAv and SMAv Remote Bypass Restrictions due Default SSH Host Keys Vulnerability, Medium

See also: 🔍

Entryinfo

Created: 06/26/2015 09:46
Updated: 05/21/2022 22:15
Changes: 06/26/2015 09:46 (65), 07/01/2017 08:15 (7), 05/21/2022 21:53 (4), 05/21/2022 22:05 (1), 05/21/2022 22:15 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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