Vulnerability Monitor

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CVE-2012-5975

The SSH USERAUTH CHANGE REQUEST feature in SSH Tectia Server 6.0.4 through 6.0.20, 6.1.0 through 6.1.12, 6.2.0 through 6.2.5, and 6.3.0 through 6.3.2 on UNIX and Linux, when old-style password authentication is enabled, allows remote attackers to bypass authentication via a crafted session involving entry of blank passwords, as demonstrated by a root login session from a modified OpenSSH client with an added input_userauth_passwd_changereq call in sshconnect2.c.

Published

2012-12-04T23:55:00.973

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 9.3 (HIGH)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:C/I:C/A:C

  • Access Vector: NETWORK
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: COMPLETE
  • Integrity Impact: COMPLETE
  • Availability Impact: COMPLETE
Exploitability Score

8.6

Impact Score

10.0

Weaknesses
  • Type: Primary
    CWE-287
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application ssh tectia_server 6.0.4 Yes
Application ssh tectia_server 6.0.5 Yes
Application ssh tectia_server 6.0.6 Yes
Application ssh tectia_server 6.0.7 Yes
Application ssh tectia_server 6.0.8 Yes
Application ssh tectia_server 6.0.9 Yes
Application ssh tectia_server 6.0.10 Yes
Application ssh tectia_server 6.0.11 Yes
Application ssh tectia_server 6.0.12 Yes
Application ssh tectia_server 6.0.13 Yes
Application ssh tectia_server 6.0.14 Yes
Application ssh tectia_server 6.0.17 Yes
Application ssh tectia_server 6.0.18 Yes
Application ssh tectia_server 6.0.19 Yes
Application ssh tectia_server 6.0.20. Yes
Application ssh tectia_server 6.1.0 Yes
Application ssh tectia_server 6.1.1 Yes
Application ssh tectia_server 6.1.2 Yes
Application ssh tectia_server 6.1.3 Yes
Application ssh tectia_server 6.1.4 Yes
Application ssh tectia_server 6.1.5 Yes
Application ssh tectia_server 6.1.6 Yes
Application ssh tectia_server 6.1.7 Yes
Application ssh tectia_server 6.1.8 Yes
Application ssh tectia_server 6.1.9 Yes
Application ssh tectia_server 6.1.12 Yes
Application ssh tectia_server 6.2.0 Yes
Application ssh tectia_server 6.2.1 Yes
Application ssh tectia_server 6.2.2 Yes
Application ssh tectia_server 6.2.3 Yes
Application ssh tectia_server 6.2.4 Yes
Application ssh tectia_server 6.2.5 Yes
Application ssh tectia_server 6.3.0 Yes
Application ssh tectia_server 6.3.1 Yes
Application ssh tectia_server 6.3.2 Yes
Operating System linux linux_kernel * No
References