openssh vulnerable to known_hosts address harvesting
Published Aug 23, 2005
1.2
LOWCVSS 2.0
EPSS 1.18%
Description
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.
Affected products
No data.
- 3.0
- 3.0.1
- 3.0.1p1
- 3.0.2
- 3.0.2p1
- 3.0p1
- 3.1
- 3.1p1
- 3.2
- 3.2.2p1
- 3.2.3p1
- 3.3
- 3.3p1
- 3.4
- 3.4p1
- 3.5
- 3.5p1
- 3.6
- 3.6.1
- 3.6.1p1
- 3.6.1p2
- 3.7
- 3.7.1
- 3.7.1p2
- 3.8
- 3.8.1
- 3.8.1p1
- 3.9
- 3.9.1
- 3.9.1p1
No data.
Red Hat Enterprise Linux 4
openssh-0:3.9p1-8.RHEL4.20
Fixed · RHSA-2007:0257
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 4 | openssh-0:3.9p1-8.RHEL4.20 | Fixed | RHSA-2007:0257 |
No package ranges for this CVE.
Remediation
Red Hat statement
The Red Hat Product Security has rated this issue as having low security impact, a future update may address this flaw. More information regarding issue severity can be found here: https://access.redhat.com/security/updates/classification/
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:L/AC:H/Au:N/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.18% (0.01177) | 66.46th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.18% (0.01177) | 63.40th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.07% (0.00068) | 18.21th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.06% (0.00060) | 27.59th | v3 (v2023.03.01) |
| Jun 14, 2024 | 0.07% (0.00071) | 30.94th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.07% (0.00071) | 28.93th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.03% (0.01034) | 41.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.03% (0.01034) | 39.91th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.03% (0.01034) | 37.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.03% (0.01034) | 20.32th | v2 (v2022.01.01) |
References (11)
- ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2006.11/SCOSA-2006.11.txt vendor-advisoryx_refsource_SCO
- http://nms.csail.mit.edu/projects/ssh/ x_refsource_MISCPatch
- http://secunia.com/advisories/19243 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/25098 third-party-advisoryx_refsource_SECUNIA
- http://www.eweek.com/article2/0%2C1759%2C1815795%2C00.asp x_refsource_MISC
- http://www.redhat.com/support/errata/RHSA-2007-0257.html vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2005-2666 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=162681 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2005-2666
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10201 vdb-entrysignaturex_refsource_OVAL
- https://www.cve.org/CVERecord?id=CVE-2005-2666
| Link | Providers | Tags |
|---|---|---|
| ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2006.11/SCOSA-2006.11.txt | vendor-advisoryx_refsource_SCO | |
| http://nms.csail.mit.edu/projects/ssh/ | x_refsource_MISCPatch | |
| http://secunia.com/advisories/19243 | third-party-advisoryx_refsource_SECUNIA | |
| http://secunia.com/advisories/25098 | third-party-advisoryx_refsource_SECUNIA | |
| http://www.eweek.com/article2/0%2C1759%2C1815795%2C00.asp | x_refsource_MISC | |
| http://www.redhat.com/support/errata/RHSA-2007-0257.html | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/security/cve/CVE-2005-2666 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=162681 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2005-2666 | ||
| https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10201 | vdb-entrysignaturex_refsource_OVAL | |
| https://www.cve.org/CVERecord?id=CVE-2005-2666 |
Change history (0)
No recorded changes yet.