Executive Summary
Summary | |
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Title | Cisco IOS and IOS XE Software SSH Version 2 RSA-Based User Authentication Bypass Vulnerability |
Informations | |||
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Name | cisco-sa-20150923-sshpk | First vendor Publication | 2015-09-23 |
Vendor | Cisco | Last vendor Modification | 2015-09-23 |
Severity (Vendor) | N/A | Revision | 1.0 |
Security-Database Scoring CVSS v3
Cvss vector : N/A | |||
---|---|---|---|
Overall CVSS Score | NA | ||
Base Score | NA | Environmental Score | NA |
impact SubScore | NA | Temporal Score | NA |
Exploitabality Sub Score | NA | ||
Calculate full CVSS 3.0 Vectors scores |
Security-Database Scoring CVSS v2
Cvss vector : (AV:N/AC:M/Au:N/C:C/I:C/A:C) | |||
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Cvss Base Score | 9.3 | Attack Range | Network |
Cvss Impact Score | 10 | Attack Complexity | Medium |
Cvss Expoit Score | 8.6 | Authentication | None Required |
Calculate full CVSS 2.0 Vectors scores |
Detail
A vulnerability in the SSH version 2 (SSHv2) protocol implementation of Cisco IOS and IOS XE Software could allow an unauthenticated, remote attacker to bypass user authentication. Successful exploitation could allow the attacker to log in with the privileges of the user or the privileges configured for the Virtual Teletype (VTY) line. Depending on the configuration of the user and of the vty line, the attacker may obtain administrative privileges on the system. The attacker cannot use this vulnerability to elevate privileges. The attacker must know a valid username configured for RSA-based user authentication and the public key configured for that user to exploit this vulnerability. This vulnerability affects only devices configured for public key authentication method, also known as RSA-based user authentication feature. Cisco has released software updates that address this vulnerability. Workarounds for this vulnerability are not available; however administrators could temporarily disable RSA-based user authentication to avoid exploitation. This advisory is available at the following link: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150923-sshpk Note: The September 23, 2015, release of the Cisco IOS and IOS XE Software Security Advisory bundled publication includes three Cisco Security Advisories. All the advisories address vulnerabilities in Cisco IOS Software and Cisco IOS XE Software. Individual publication links are in Cisco Event Response: September 2015 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication at the following link: http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_sep15.html BEGIN PGP SIGNATURE Comment: GPGTools - http://gpgtools.org iQIcBAEBCAAGBQJWAWwoAAoJEIpI1I6i1Mx3ZX8P/2w1PAyuoJbNS6i5ESErJBX8 EM18LXLdOuy+qe5Ag2V6ztDBpLGpp2AdaR4EYeaRnRyqBjL5gqdyXLYotIKk3IY0 4DLG/IEiLoSJql51Fx8GXvuomqr4S3Its3MfSjfkre2fEvVV6NpXaCaBZKsowiw +e+pu4D1qPZm30+kwO7QUIN0lGwCIboZa7OiRLjItRyixiKbA7LADsCijCNy6FIF +G8shRD/mSkyBoetF1MjvAN18d+z+Kuy9YOGViM8oWSV20/Z9PXlSujkVdRjaxW4Y +dPp5Fk1ot6zqSXQahZZRBY8glIkqE8gsTSJT9qhfD+8Q3XXY1eUNvlKuNmv3HDg ftlJYTq7Ye5gjbvd2ro7/IAoKf/jaC2CM6pTgegDsXCCarzUMVj6ZjXiP1XqjRS4 4yaX7v9z3qPVid8W8niJscFVdXMG4YGhHqNdriDirUmvF+a5XDa0OGCi40xO8rsV HG1PishidpaMXFgklJPCWzzuwmwWDu6GKvpJkTTSRNYWttzWV+/aMNQzzyGjTSIY ePzDeRctHfaeZyaVCiAVvv6Pj2NP0PGbLmtsr5K5UqoTEbVTy0CIte1iLuu8zzhs HzyoWlqziOq9+0NfvcM5/0J64wekiOUiQehKzyYOa+F3F54KzyDJxNhToezkLhdQ VcGcN1w0HOwRLvd7LWN6 =hXl +END PGP SIGNATURE _______________________________________________ cust-security-announce mailing list cust-security-announce@cisco.com To unsubscribe, send the command "unsubscribe" in the subject of your message to cust-security-announce-leave@cisco.com |
Original Source
Url : http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco (...) |
CWE : Common Weakness Enumeration
% | Id | Name |
---|---|---|
100 % | CWE-287 | Improper Authentication |
CPE : Common Platform Enumeration
Nessus® Vulnerability Scanner
Date | Description |
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2015-10-02 | Name : The remote device is missing a vendor-supplied security patch. File : cisco-sa-20150923-sshpk-ios.nasl - Type : ACT_GATHER_INFO |
2015-10-02 | Name : The remote device is missing a vendor-supplied security patch. File : cisco-sa-20150923-sshpk-iosxe.nasl - Type : ACT_GATHER_INFO |
Alert History
Date | Informations |
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2015-10-03 13:24:07 |
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2015-09-29 00:21:46 |
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2015-09-23 21:22:00 |
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