OpenSSH portable 4.1 on SUSE Linux, and possibly other platforms and versions, and possibly under limited configurations, allows remote attackers to determine valid usernames via timing discrepancies in which responses take longer for valid usernames than invalid ones, as demonstrated by sshtime
Published Oct 10, 2006
2.6
LOWCVSS 2.0
EPSS 58.33%
Description
OpenSSH portable 4.1 on SUSE Linux, and possibly other platforms and versions, and possibly under limited configurations, allows remote attackers to determine valid usernames via timing discrepancies in which responses take longer for valid usernames than invalid ones, as demonstrated by sshtime. NOTE: as of 20061014, it appears that this issue is dependent on the use of manually-set passwords that causes delays when processing /etc/shadow due to an increased number of rounds.
Affected products
No data.
Running on/with
- n/a
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Red Hat statement
Red Hat has been unable to reproduce this flaw and believes that the reporter was experiencing behavior specific to his environment. We will not be releasing update to address this issue.
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:N/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 (32 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 58.33% (0.58329) | 99.07th | v5 (v2026.06.15) |
| Sep 7, 2026 | 57.43% (0.57426) | 99.01th | v5 (v2026.06.15) |
| Jun 15, 2026 | 53.96% (0.53959) | 98.87th | v5 (v2026.06.15) |
| Mar 4, 2026 | 56.63% (0.56627) | 98.08th | v4 (v2025.03.14) |
| Mar 1, 2026 | 55.19% (0.55191) | 98.02th | v4 (v2025.03.14) |
| Feb 4, 2026 | 56.63% (0.56627) | 98.05th | v4 (v2025.03.14) |
| Feb 1, 2026 | 55.19% (0.55191) | 98.00th | v4 (v2025.03.14) |
| Jan 4, 2026 | 56.63% (0.56627) | 98.03th | v4 (v2025.03.14) |
| Jan 1, 2026 | 55.19% (0.55191) | 97.98th | v4 (v2025.03.14) |
| Dec 28, 2025 | 56.63% (0.56627) | 98.02th | v4 (v2025.03.14) |
| Dec 27, 2025 | 58.10% (0.58102) | 98.10th | v4 (v2025.03.14) |
| Dec 4, 2025 | 56.63% (0.56627) | 98.00th | v4 (v2025.03.14) |
| Dec 1, 2025 | 55.19% (0.55191) | 97.95th | v4 (v2025.03.14) |
| Nov 4, 2025 | 56.63% (0.56627) | 98.00th | v4 (v2025.03.14) |
| Nov 1, 2025 | 55.19% (0.55191) | 97.95th | v4 (v2025.03.14) |
| Oct 28, 2025 | 56.63% (0.56627) | 98.00th | v4 (v2025.03.14) |
| Oct 27, 2025 | 58.10% (0.58102) | 98.08th | v4 (v2025.03.14) |
| Oct 11, 2025 | 56.63% (0.56627) | 98.00th | v4 (v2025.03.14) |
| Oct 10, 2025 | 51.37% (0.51374) | 97.72th | v4 (v2025.03.14) |
| May 29, 2025 | 37.83% (0.37831) | 97.00th | v4 (v2025.03.14) |
| Mar 17, 2025 | 41.35% (0.41353) | 97.08th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.05% (0.01048) | 84.67th | v3 (v2023.03.01) |
| Dec 6, 2023 | 1.05% (0.01048) | 82.27th | v3 (v2023.03.01) |
| Sep 21, 2023 | 1.29% (0.01290) | 84.20th | v3 (v2023.03.01) |
| Aug 14, 2023 | 1.34% (0.01344) | 84.42th | v3 (v2023.03.01) |
| Jul 7, 2023 | 1.30% (0.01302) | 83.98th | v3 (v2023.03.01) |
| May 30, 2023 | 0.84% (0.00837) | 79.67th | v3 (v2023.03.01) |
| Mar 14, 2023 | 0.80% (0.00795) | 78.94th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.74% (0.00740) | 77.89th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.97% (0.01974) | 78.97th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.97% (0.01974) | 77.12th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.97% (0.01974) | 56.20th | v2 (v2022.01.01) |
References (12)
- http://secunia.com/advisories/25979 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://www.osvdb.org/32721 vdb-entryx_refsource_OSVDB
- http://www.securityfocus.com/archive/1/448025/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/archive/1/448108/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/archive/1/448156/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/archive/1/448702/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/20418 vdb-entryx_refsource_BID
- http://www.sybsecurity.com/hack-proventia-1.pdf x_refsource_MISC
- http://www.vupen.com/english/advisories/2007/2545 vdb-entryx_refsource_VUPENVendor Advisory
- https://access.redhat.com/security/cve/CVE-2006-5229 Vendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2006-5229
- https://www.cve.org/CVERecord?id=CVE-2006-5229
| Link | Providers | Tags |
|---|---|---|
| http://secunia.com/advisories/25979 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://www.osvdb.org/32721 | vdb-entryx_refsource_OSVDB | |
| http://www.securityfocus.com/archive/1/448025/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| http://www.securityfocus.com/archive/1/448108/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| http://www.securityfocus.com/archive/1/448156/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| http://www.securityfocus.com/archive/1/448702/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| http://www.securityfocus.com/bid/20418 | vdb-entryx_refsource_BID | |
| http://www.sybsecurity.com/hack-proventia-1.pdf | x_refsource_MISC | |
| http://www.vupen.com/english/advisories/2007/2545 | vdb-entryx_refsource_VUPENVendor Advisory | |
| https://access.redhat.com/security/cve/CVE-2006-5229 | Vendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2006-5229 | ||
| https://www.cve.org/CVERecord?id=CVE-2006-5229 |
Change history (0)
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