Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-1999-1231

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
09/06/1999
Last modified:
03/04/2025

Description

ssh 2.0.12, and possibly other versions, allows valid user names to attempt to enter the correct password multiple times, but only prompts an invalid user name for a password once, which allows remote attackers to determine user account names on the server.

Impact

Vector 2.0
AV:N/AC:L/Au:N/C:P/I:N/A:N CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): None
Availability (A): None

Base Score 2.0
5.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:ssh:ssh2:2.0:*:*:*:*:*:*:*
cpe:2.3:a:ssh:ssh2:2.0.1:*:*:*:*:*:*:*
cpe:2.3:a:ssh:ssh2:2.0.2:*:*:*:*:*:*:*
cpe:2.3:a:ssh:ssh2:2.0.3:*:*:*:*:*:*:*
cpe:2.3:a:ssh:ssh2:2.0.4:*:*:*:*:*:*:*
cpe:2.3:a:ssh:ssh2:2.0.5:*:*:*:*:*:*:*
cpe:2.3:a:ssh:ssh2:2.0.6:*:*:*:*:*:*:*
cpe:2.3:a:ssh:ssh2:2.0.7:*:*:*:*:*:*:*
cpe:2.3:a:ssh:ssh2:2.0.8:*:*:*:*:*:*:*
cpe:2.3:a:ssh:ssh2:2.0.9:*:*:*:*:*:*:*
cpe:2.3:a:ssh:ssh2:2.0.10:*:*:*:*:*:*:*
cpe:2.3:a:ssh:ssh2:2.0.11:*:*:*:*:*:*:*
cpe:2.3:a:ssh:ssh2:2.0.12:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools