krb5: double-free vulnerability in 1.7+
Published Apr 22, 2010
4.0
MEDIUMCVSS 2.0
EPSS 11.86%
Description
Double free vulnerability in do_tgs_req.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.7.x and 1.8.x before 1.8.2 allows remote authenticated users to cause a denial of service (daemon crash) or possibly execute arbitrary code via a request associated with (1) renewal or (2) validation.
Affected products
No data.
- 1.7
- 1.7.1
- 1.8
- 1.8.1
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
Not vulnerable. This issue did not affect the versions of krb5 as shipped with Red Hat Enterprise Linux 3, 4, or 5.
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: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 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 (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 11.86% (0.11857) | 95.98th | v5 (v2026.06.15) |
| Jun 15, 2026 | 11.86% (0.11857) | 95.55th | v5 (v2026.06.15) |
| Nov 9, 2025 | 22.07% (0.22068) | 95.54th | v4 (v2025.03.14) |
| Mar 30, 2025 | 14.69% (0.14687) | 93.91th | v4 (v2025.03.14) |
| Mar 29, 2025 | 21.26% (0.21262) | 92.95th | v4 (v2025.03.14) |
| Mar 28, 2025 | 14.69% (0.14687) | 93.92th | v4 (v2025.03.14) |
| Mar 27, 2025 | 21.26% (0.21262) | 94.87th | v4 (v2025.03.14) |
| Mar 20, 2025 | 14.69% (0.14687) | 93.98th | v4 (v2025.03.14) |
| Mar 19, 2025 | 21.26% (0.21262) | 94.97th | v4 (v2025.03.14) |
| Mar 17, 2025 | 14.69% (0.14687) | 93.98th | v4 (v2025.03.14) |
| Dec 17, 2024 | 8.05% (0.08051) | 94.29th | v3 (v2023.03.01) |
| Jun 9, 2024 | 4.46% (0.04465) | 92.44th | v3 (v2023.03.01) |
| Mar 7, 2023 | 6.53% (0.06527) | 92.59th | v3 (v2023.03.01) |
| Mar 6, 2023 | 32.11% (0.32108) | 97.59th | v2 (v2022.01.01) |
| Feb 4, 2022 | 32.11% (0.32108) | 96.51th | v2 (v2022.01.01) |
References (19)
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=577490 x_refsource_CONFIRM
- http://lists.apple.com/archives/security-announce/2010//Jun/msg00001.html vendor-advisoryx_refsource_APPLE
- http://lists.opensuse.org/opensuse-security-announce/2010-04/msg00006.html vendor-advisoryx_refsource_SUSE
- http://secunia.com/advisories/39656 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/39784 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/40220 third-party-advisoryx_refsource_SECUNIA
- http://securitytracker.com/id?1023904 vdb-entryx_refsource_SECTRACK
- http://support.apple.com/kb/HT4188 x_refsource_CONFIRM
- http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-004.txt x_refsource_CONFIRM
- http://www.securityfocus.com/archive/1/510843/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/39599 vdb-entryx_refsource_BIDExploit
- http://www.ubuntu.com/usn/USN-940-1 vendor-advisoryx_refsource_UBUNTU
- http://www.vupen.com/english/advisories/2010/1001 vdb-entryx_refsource_VUPEN
- http://www.vupen.com/english/advisories/2010/1192 vdb-entryx_refsource_VUPEN
- http://www.vupen.com/english/advisories/2010/1481 vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2010-1320 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=581922 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2010-1320
- https://www.cve.org/CVERecord?id=CVE-2010-1320
Change history (0)
No recorded changes yet.