pam_ssh: Password prompt varies for existent and non-existent users
Published Apr 8, 2009
5.0
MEDIUMCVSS 2.0
EPSS 1.31%
Description
pam_ssh 1.92 and possibly other versions, as used when PAM is compiled with USE=ssh, generates different error messages depending on whether the username is valid or invalid, which makes it easier for remote attackers to enumerate usernames.
Affected products
No data.
- 1.92
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
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:L/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 | 1.31% (0.01305) | 69.49th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.31% (0.01305) | 66.70th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.36% (0.00357) | 55.80th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.06% (0.01060) | 84.78th | v3 (v2023.03.01) |
| Apr 10, 2024 | 1.06% (0.01060) | 83.88th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.06% (0.01060) | 81.86th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 17, 2023 | 1.21% (0.01213) | 66.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
References (9)
- http://bugs.gentoo.org/show_bug.cgi?id=263579 x_refsource_CONFIRM
- http://secunia.com/advisories/34536 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/34986 third-party-advisoryx_refsource_SECUNIA
- https://access.redhat.com/security/cve/CVE-2009-1273 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=492153 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2009-1273
- https://www.cve.org/CVERecord?id=CVE-2009-1273
- https://www.redhat.com/archives/fedora-package-announce/2009-May/msg00116.html vendor-advisoryx_refsource_FEDORA
- https://www.redhat.com/archives/fedora-package-announce/2009-May/msg00145.html vendor-advisoryx_refsource_FEDORA
| Link | Providers | Tags |
|---|---|---|
| http://bugs.gentoo.org/show_bug.cgi?id=263579 | x_refsource_CONFIRM | |
| http://secunia.com/advisories/34536 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://secunia.com/advisories/34986 | third-party-advisoryx_refsource_SECUNIA | |
| https://access.redhat.com/security/cve/CVE-2009-1273 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=492153 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2009-1273 | ||
| https://www.cve.org/CVERecord?id=CVE-2009-1273 | ||
| https://www.redhat.com/archives/fedora-package-announce/2009-May/msg00116.html | vendor-advisoryx_refsource_FEDORA | |
| https://www.redhat.com/archives/fedora-package-announce/2009-May/msg00145.html | vendor-advisoryx_refsource_FEDORA |
Change history (0)
No recorded changes yet.