Vulnerability Name:

CVE-2005-2666 (CCN-40897)

Assigned:2005-07-07
Published:2005-07-07
Updated:2017-10-11
Summary:SSH, as implemented in OpenSSH before 4.0 and possibly other implementations, stores hostnames, IP addresses, and keys in plaintext in the known_hosts file, which makes it easier for an attacker that has compromised an SSH user's account to generate a list of additional targets that are more likely to have the same password or key.
CVSS v3 Severity:3.5 Low (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): Low
Availibility (A): None
CVSS v2 Severity:1.2 Low (CVSS v2 Vector: AV:L/AC:H/Au:N/C:P/I:N/A:N)
0.9 Low (Temporal CVSS v2 Vector: AV:L/AC:H/Au:N/C:P/I:N/A:N/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): High
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
4.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:N/I:P/A:N)
3.0 Low (CCN Temporal CVSS v2 Vector: AV:N/AC:L/Au:S/C:N/I:P/A:N/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
Vulnerability Type:CWE-255
Vulnerability Consequences:Obtain Information
References:Source: SCO
Type: UNKNOWN
SCOSA-2006.11

Source: MITRE
Type: CNA
CVE-2005-2666

Source: CCN
Type: NMS @ MIT CSAIL
Protecting SSH from known_hosts Address Harvesting

Source: MISC
Type: Patch
http://nms.csail.mit.edu/projects/ssh/

Source: CCN
Type: RHSA-2007-0257
Low: openssh security and bug fix update

Source: SECUNIA
Type: UNKNOWN
19243

Source: SECUNIA
Type: UNKNOWN
25098

Source: CCN
Type: ASA-2007-214
OpenSSH security and bug fix update (RHSA-2007-0257)

Source: CCN
Type: IBM APAR OA25412
OA25412: DOC UPDATE FOR "IBM PORTED TOOLS FOR Z/OS" OPENSSH 5655M2301

Source: MISC
Type: UNKNOWN
http://www.eweek.com/article2/0,1759,1815795,00.asp

Source: CCN
Type: OpenSSH Web site
OpenSSH

Source: REDHAT
Type: UNKNOWN
RHSA-2007:0257

Source: XF
Type: UNKNOWN
openssh-knownhosts-weak-security(40897)

Source: OVAL
Type: UNKNOWN
oval:org.mitre.oval:def:10201

Vulnerable Configuration:Configuration 1:
  • cpe:/a:openbsd:openssh:3.0:-:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.0.1:-:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.0.1p1:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.0.2:-:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.0.2p1:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.0p1:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.1:-:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.1p1:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.2:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.2.2p1:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.2.3p1:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.3:-:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.3p1:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.4:-:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.4p1:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.5:-:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.5p1:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.6:-:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.6.1:-:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.6.1p1:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.6.1p2:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.7:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.7.1:-:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.7.1p2:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.8:-:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.8.1:-:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.8.1p1:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.9:-:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.9.1:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.9.1p1:*:*:*:*:*:*:*

    • Configuration RedHat 1:
  • cpe:/o:redhat:enterprise_linux:4:*:*:*:*:*:*:*

    • Configuration RedHat 2:
  • cpe:/o:redhat:enterprise_linux:4::as:*:*:*:*:*

    • Configuration RedHat 3:
  • cpe:/o:redhat:enterprise_linux:4::desktop:*:*:*:*:*

    • Configuration RedHat 4:
  • cpe:/o:redhat:enterprise_linux:4::es:*:*:*:*:*

    • Configuration RedHat 5:
  • cpe:/o:redhat:enterprise_linux:4::ws:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:openbsd:openssh:3.0:-:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.2.2p1:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.4p1:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.4:-:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.6.1p2:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.0p1:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.0.1p1:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.0.1:-:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.0.2p1:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.0.2:-:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.1p1:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.1:-:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.2:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.2.3p1:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.3p1:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.3:-:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.5:-:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.5p1:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.6:-:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.6.1p1:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.6.1:-:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.7:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.7.1p2:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.7.1:-:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.8:-:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.8.1p1:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.8.1:-:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.9:-:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.9.1p1:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.9.1:*:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:3.2.3p1:*:*:*:*:*:*:*
  • AND
  • cpe:/o:redhat:enterprise_linux:4::as:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux:4::desktop:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux:4::es:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux:4::ws:*:*:*:*:*
  • OR cpe:/o:ibm:z/os:*:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.mitre.oval:def:10201
    V
    		SSH, as implemented in OpenSSH before 4.0 and possibly other implementations, stores hostnames, IP addresses, and keys in plaintext in the known_hosts file, which makes it easier for an attacker that has compromised an SSH user's account to generate a list of additional targets that are more likely to have the same password or key.
    2013-04-29
    oval:com.redhat.rhsa:def:20070257
    P
    		RHSA-2007:0257: openssh security and bug fix update (Low)
    2008-03-20
    BACK
    openbsd openssh 3.0
    openbsd openssh 3.0.1
    openbsd openssh 3.0.1p1
    openbsd openssh 3.0.2
    openbsd openssh 3.0.2p1
    openbsd openssh 3.0p1
    openbsd openssh 3.1
    openbsd openssh 3.1p1
    openbsd openssh 3.2
    openbsd openssh 3.2.2p1
    openbsd openssh 3.2.3p1
    openbsd openssh 3.3
    openbsd openssh 3.3p1
    openbsd openssh 3.4
    openbsd openssh 3.4p1
    openbsd openssh 3.5
    openbsd openssh 3.5p1
    openbsd openssh 3.6
    openbsd openssh 3.6.1
    openbsd openssh 3.6.1p1
    openbsd openssh 3.6.1p2
    openbsd openssh 3.7
    openbsd openssh 3.7.1
    openbsd openssh 3.7.1p2
    openbsd openssh 3.8
    openbsd openssh 3.8.1
    openbsd openssh 3.8.1p1
    openbsd openssh 3.9
    openbsd openssh 3.9.1
    openbsd openssh 3.9.1p1
    openbsd openssh 3.0
    openbsd openssh 3.2.2p1
    openbsd openssh 3.4p1
    openbsd openssh 3.4
    openbsd openssh 3.6.1p2
    openbsd openssh 3.0p1
    openbsd openssh 3.0.1p1
    openbsd openssh 3.0.1
    openbsd openssh 3.0.2p1
    openbsd openssh 3.0.2
    openbsd openssh 3.1p1
    openbsd openssh 3.1
    openbsd openssh 3.2
    openbsd openssh 3.2.3p1
    openbsd openssh 3.3p1
    openbsd openssh 3.3
    openbsd openssh 3.5
    openbsd openssh 3.5p1
    openbsd openssh 3.6
    openbsd openssh 3.6.1p1
    openbsd openssh 3.6.1
    openbsd openssh 3.7
    openbsd openssh 3.7.1p2
    openbsd openssh 3.7.1
    openbsd openssh 3.8
    openbsd openssh 3.8.1p1
    openbsd openssh 3.8.1
    openbsd openssh 3.9
    openbsd openssh 3.9.1p1
    openbsd openssh 3.9.1
    openbsd openssh 3.2.3p1
    redhat enterprise linux 4
    redhat enterprise linux 4
    redhat enterprise linux 4
    redhat enterprise linux 4
    ibm z/os *