krb5: uninitialized pointer use in krb5kdc leads to KDC crash
Published Feb 10, 2011
5.0
MEDIUMCVSS 2.0
EPSS 2.62%
Description
The Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.9 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a malformed request packet that does not trigger a response packet.
Affected products
No data.
- 1.9
No data.
Red Hat Enterprise Linux 6
krb5
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | krb5 | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of krb5 as shipped with Red Hat Enterprise Linux 3, 4, 5 or 6.
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 (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.62% (0.02624) | 84.94th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.62% (0.02624) | 83.44th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.21% (0.01214) | 77.16th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.64% (0.02644) | 76.17th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.38% (0.01382) | 79.00th | v4 (v2025.03.14) |
| Dec 17, 2024 | 84.89% (0.84892) | 98.73th | v3 (v2023.03.01) |
| Apr 12, 2024 | 92.71% (0.92709) | 98.97th | v3 (v2023.03.01) |
| Feb 27, 2024 | 93.73% (0.93726) | 99.05th | v3 (v2023.03.01) |
| Mar 7, 2023 | 94.52% (0.94522) | 98.69th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
No CWE recorded.
References (11)
- http://secunia.com/advisories/43260 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://securityreason.com/securityalert/8073 third-party-advisoryx_refsource_SREASON
- http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-002.txt x_refsource_CONFIRMVendor Advisory
- http://www.securityfocus.com/archive/1/516299/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/46272 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1025037 vdb-entryx_refsource_SECTRACK
- http://www.vupen.com/english/advisories/2011/0330 vdb-entryx_refsource_VUPENVendor Advisory
- https://access.redhat.com/security/cve/CVE-2011-0283 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=670567 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2011-0283
- https://www.cve.org/CVERecord?id=CVE-2011-0283
| Link | Providers | Tags |
|---|---|---|
| http://secunia.com/advisories/43260 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://securityreason.com/securityalert/8073 | third-party-advisoryx_refsource_SREASON | |
| http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-002.txt | x_refsource_CONFIRMVendor Advisory | |
| http://www.securityfocus.com/archive/1/516299/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| http://www.securityfocus.com/bid/46272 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id?1025037 | vdb-entryx_refsource_SECTRACK | |
| http://www.vupen.com/english/advisories/2011/0330 | vdb-entryx_refsource_VUPENVendor Advisory | |
| https://access.redhat.com/security/cve/CVE-2011-0283 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=670567 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2011-0283 | ||
| https://www.cve.org/CVERecord?id=CVE-2011-0283 |
Change history (0)
No recorded changes yet.