pam_krb5: Password prompt varies for existent and non-existent users
Published May 28, 2009
5.0
MEDIUMCVSS 2.0
EPSS 2.89%
Description
pam_krb5 2.2.14 through 2.3.4, as used in Red Hat Enterprise Linux (RHEL) 5, generates different password prompts depending on whether the user account exists, which allows remote attackers to enumerate valid usernames.
Affected products
No data.
Running on/with
- 5
- 5
- 5
- 5
No data.
Red Hat Enterprise Linux 5
pam_krb5-0:2.2.14-15
Fixed · RHSA-2010:0258
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | pam_krb5-0:2.2.14-15 | Fixed | RHSA-2010:0258 |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of the pam_krb5 packages, as shipped with Red Hat Enterprise Linux 3 and 4.
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 2, 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 (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 2.89% (0.02890) | 86.42th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.33% (0.03326) | 86.99th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.52% (0.01518) | 79.51th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.33% (0.03335) | 78.61th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.52% (0.01518) | 79.95th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.70% (0.00696) | 80.90th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.70% (0.00696) | 79.59th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.70% (0.00696) | 77.13th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.77th | v2 (v2022.01.01) |
| Feb 13, 2023 | 2.17% (0.02172) | 80.28th | v2 (v2022.01.01) |
| Feb 3, 2023 | 3.78% (0.03779) | 85.12th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.73th | v2 (v2022.01.01) |
References (15)
- http://osvdb.org/54791 vdb-entryx_refsource_OSVDB
- http://secunia.com/advisories/35230 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/43314 third-party-advisoryx_refsource_SECUNIA
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:054 vendor-advisoryx_refsource_MANDRIVA
- http://www.openwall.com/lists/oss-security/2009/05/27/1 mailing-listx_refsource_MLIST
- http://www.securityfocus.com/archive/1/516397/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/35112 vdb-entryx_refsource_BID
- http://www.vmware.com/security/advisories/VMSA-2011-0003.html x_refsource_CONFIRM
- http://www.vupen.com/english/advisories/2009/1448 vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2009-1384 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=502602 x_refsource_CONFIRMVendor AdvisoryIssue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2009-1384
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7081 vdb-entrysignaturex_refsource_OVAL
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9652 vdb-entrysignaturex_refsource_OVAL
- https://www.cve.org/CVERecord?id=CVE-2009-1384
Change history (0)
No recorded changes yet.