krb5: UDP ping-pong flaw in kpasswd
Published May 29, 2013
5.0
MEDIUMCVSS 2.0
EPSS 6.43%
Description
schpw.c in the kpasswd service in kadmind in MIT Kerberos 5 (aka krb5) before 1.11.3 does not properly validate UDP packets before sending responses, which allows remote attackers to cause a denial of service (CPU and bandwidth consumption) via a forged packet that triggers a communication loop, as demonstrated by krb_pingpong.nasl, a related issue to CVE-1999-0103.
Affected products
No data.
Configuration 1
- < 1.11.3
Configuration 2
Configuration 3
- 17
- 18
- 19
Configuration 4
- 5.0
- 6.0
- 5.9
- 6.4
- 5.0
- 6.0
- 6.4
- 5.0
- 6.0
Configuration 5
- 6.0
- 7.0
- 8.0
Configuration 6
- 12.04
- 14.04
- 15.04
- 15.10
No data.
Red Hat Enterprise Linux 5
krb5-0:1.6.1-70.el5_9.2
Fixed · RHSA-2013:0942
Red Hat Enterprise Linux 6
krb5-0:1.10.3-10.el6_4.3
Fixed · RHSA-2013:0942
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | krb5-0:1.6.1-70.el5_9.2 | Fixed | RHSA-2013:0942 |
| Red Hat Enterprise Linux 6 | krb5-0:1.10.3-10.el6_4.3 | Fixed | RHSA-2013:0942 |
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:N/I:N/A:P
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 (17 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 6.43% (0.06432) | 93.50th | v5 (v2026.06.15) |
| Jun 15, 2026 | 6.49% (0.06485) | 92.86th | v5 (v2026.06.15) |
| Mar 21, 2026 | 15.35% (0.15352) | 94.56th | v4 (v2025.03.14) |
| Feb 26, 2026 | 18.94% (0.18937) | 95.18th | v4 (v2025.03.14) |
| Nov 9, 2025 | 15.33% (0.15333) | 94.34th | v4 (v2025.03.14) |
| Sep 16, 2025 | 21.41% (0.21414) | 95.50th | v4 (v2025.03.14) |
| Mar 30, 2025 | 23.62% (0.23619) | 95.52th | v4 (v2025.03.14) |
| Mar 29, 2025 | 22.22% (0.22221) | 93.21th | v4 (v2025.03.14) |
| Mar 17, 2025 | 23.62% (0.23619) | 95.53th | v4 (v2025.03.14) |
| Dec 27, 2024 | 78.74% (0.78744) | 98.48th | v3 (v2023.03.01) |
| Dec 17, 2024 | 80.69% (0.80692) | 98.57th | v3 (v2023.03.01) |
| Jul 16, 2023 | 95.52% (0.95516) | 99.09th | v3 (v2023.03.01) |
| Apr 11, 2023 | 95.93% (0.95929) | 99.10th | v3 (v2023.03.01) |
| Mar 7, 2023 | 96.52% (0.96519) | 99.27th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.77th | 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://krbdev.mit.edu/rt/Ticket/Display.html?id=7637 x_refsource_CONFIRMVendor Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2013-May/105879.html vendor-advisoryx_refsource_FEDORAThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2013-May/105978.html vendor-advisoryx_refsource_FEDORAThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2013-May/106698.html vendor-advisoryx_refsource_FEDORAThird Party Advisory
- http://lists.opensuse.org/opensuse-updates/2013-07/msg00004.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-updates/2013-07/msg00007.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2013-0942.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://www.debian.org/security/2013/dsa-2701 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:166 vendor-advisoryx_refsource_MANDRIVAThird Party Advisory
- http://www.ubuntu.com/usn/USN-2810-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2002-2443 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=962531 x_refsource_CONFIRMIssue TrackingThird Party Advisory
- https://github.com/krb5/krb5/commit/cf1a0c411b2668c57c41e9c4efd15ba17b6b322c x_refsource_CONFIRMPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2002-2443
- https://www.cve.org/CVERecord?id=CVE-2002-2443
Change history (0)
No recorded changes yet.