krb5: KDC uninitialized pointer crash in authorization data handling (MITKRB5-SA-2010-006)
Published Oct 7, 2010
6.5
MEDIUMCVSS 2.0
EPSS 3.04%
Description
The merge_authdata function in kdc_authdata.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8.x before 1.8.4 does not properly manage an index into an authorization-data list, which allows remote attackers to cause a denial of service (daemon crash), or possibly obtain sensitive information, spoof authorization, or execute arbitrary code, via a TGS request that triggers an uninitialized pointer dereference, as demonstrated by a request from a Windows Active Directory client.
Affected products
No data.
- 1.8
- 1.8.1
- 1.8.2
- 1.8.3
No data.
Red Hat Enterprise Linux 6
krb5-0:1.8.2-3.el6_0.1
Fixed · RHSA-2010:0863
Red Hat Enterprise Linux 4
krb5
Not affected
Red Hat Enterprise Linux 5
krb5
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | krb5-0:1.8.2-3.el6_0.1 | Fixed | RHSA-2010:0863 |
| Red Hat Enterprise Linux 4 | krb5 | Not affected | n/a |
| Red Hat Enterprise Linux 5 | krb5 | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect Red Hat Enterprise Linux 3, 4, or 5. It was addressed in Red Hat Enterprise Linux 6 via https://rhn.redhat.com/errata/RHSA-2010-0863.html.
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:S/C:P/I:P/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 | 3.04% (0.03040) | 87.06th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.04% (0.03040) | 85.76th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.84% (0.01835) | 81.33th | v4 (v2025.03.14) |
| Mar 29, 2025 | 4.98% (0.04978) | 82.43th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.84% (0.01835) | 81.75th | v4 (v2025.03.14) |
| Feb 23, 2025 | 79.45% (0.79448) | 98.56th | v3 (v2023.03.01) |
| Jan 9, 2025 | 81.30% (0.81304) | 98.59th | v3 (v2023.03.01) |
| Dec 17, 2024 | 82.53% (0.82532) | 98.64th | v3 (v2023.03.01) |
| Dec 12, 2024 | 88.27% (0.88269) | 98.82th | v3 (v2023.03.01) |
| Dec 8, 2023 | 88.70% (0.88700) | 98.41th | v3 (v2023.03.01) |
| Oct 24, 2023 | 90.60% (0.90596) | 98.48th | v3 (v2023.03.01) |
| May 28, 2023 | 92.08% (0.92078) | 98.44th | v3 (v2023.03.01) |
| Apr 7, 2023 | 91.86% (0.91863) | 98.37th | v3 (v2023.03.01) |
| Mar 7, 2023 | 91.68% (0.91681) | 98.30th | v3 (v2023.03.01) |
| Mar 6, 2023 | 5.03% (0.05029) | 89.54th | v2 (v2022.01.01) |
| Apr 1, 2022 | 5.03% (0.05029) | 88.48th | v2 (v2022.01.01) |
| Feb 4, 2022 | 5.03% (0.05029) | 75.01th | v2 (v2022.01.01) |
References (12)
- http://lists.opensuse.org/opensuse-security-announce/2010-10/msg00006.html vendor-advisoryx_refsource_SUSE
- http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-006.txt x_refsource_CONFIRMPatchVendor Advisory
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:202 vendor-advisoryx_refsource_MANDRIVA
- http://www.redhat.com/support/errata/RHSA-2010-0863.html vendor-advisoryx_refsource_REDHAT
- http://www.securityfocus.com/archive/1/514144/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/43756 vdb-entryx_refsource_BIDPatch
- http://www.ubuntu.com/usn/USN-999-1 vendor-advisoryx_refsource_UBUNTU
- http://www.vupen.com/english/advisories/2010/2865 vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2010-1322 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=636335 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2010-1322
- https://www.cve.org/CVERecord?id=CVE-2010-1322
| Link | Providers | Tags |
|---|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2010-10/msg00006.html | vendor-advisoryx_refsource_SUSE | |
| http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-006.txt | x_refsource_CONFIRMPatchVendor Advisory | |
| http://www.mandriva.com/security/advisories?name=MDVSA-2010:202 | vendor-advisoryx_refsource_MANDRIVA | |
| http://www.redhat.com/support/errata/RHSA-2010-0863.html | vendor-advisoryx_refsource_REDHAT | |
| http://www.securityfocus.com/archive/1/514144/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| http://www.securityfocus.com/bid/43756 | vdb-entryx_refsource_BIDPatch | |
| http://www.ubuntu.com/usn/USN-999-1 | vendor-advisoryx_refsource_UBUNTU | |
| http://www.vupen.com/english/advisories/2010/2865 | vdb-entryx_refsource_VUPEN | |
| https://access.redhat.com/security/cve/CVE-2010-1322 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=636335 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2010-1322 | ||
| https://www.cve.org/CVERecord?id=CVE-2010-1322 |
Change history (0)
No recorded changes yet.