krb5: Automatic sec context deletion could lead to double-free
Published Sep 13, 2017
9.8
CRITICALCVSS 3.0
EPSS 5.48%
Description
Double free vulnerability in MIT Kerberos 5 (aka krb5) allows attackers to have unspecified impact via vectors involving automatic deletion of security contexts on error.
Affected products
No data.
Configuration 1
- 1.14
- 1.14
- 1.14
- 1.14
- 1.14.1
- 1.14.2
- 1.14.3
- 1.14.4
- 1.14.5
- 1.15
- 1.15.1
- 1.15.1
- 1.15.1
Configuration 2
- 25
- 26
No data.
Red Hat Enterprise Linux 5
krb5
Will not fix
Red Hat Enterprise Linux 6
krb5
Will not fix
Red Hat Enterprise Linux 7
krb5
Will not fix
Red Hat JBoss Enterprise Application Platform 6
krb5
Will not fix
Red Hat JBoss Enterprise Web Server 2
krb5
Will not fix
Red Hat JBoss Enterprise Web Server 3
krb5
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | krb5 | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | krb5 | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | krb5 | Will not fix | n/a |
| Red Hat JBoss Enterprise Application Platform 6 | krb5 | Will not fix | n/a |
| Red Hat JBoss Enterprise Web Server 2 | krb5 | Will not fix | n/a |
| Red Hat JBoss Enterprise Web Server 3 | krb5 | Will not fix | n/a |
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.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
AV:N/AC:L/Au:N/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
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Table of values (16 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 5.48% (0.05481) | 92.51th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.48% (0.05481) | 91.72th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.60% (0.00600) | 78.66th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.60% (0.00600) | 77.78th | v3 (v2023.03.01) |
| Jun 29, 2023 | 0.60% (0.00600) | 75.49th | v3 (v2023.03.01) |
| May 8, 2023 | 0.77% (0.00766) | 78.56th | v3 (v2023.03.01) |
| Mar 16, 2023 | 1.08% (0.01079) | 82.05th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.00% (0.01005) | 81.34th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.02% (0.01018) | 38.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.02% (0.01018) | 36.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.04% (0.01040) | 28.32th | v1 |
| Jan 6, 2022 | 1.04% (0.01040) | 27.69th | v1 |
| Sep 1, 2021 | 1.04% (0.01040) | 64.49th | v1 |
| Apr 14, 2021 | 1.04% (0.01040) | 0.00th | v1 |
References (7)
- http://krbdev.mit.edu/rt/Ticket/Display.html?id=8598 x_refsource_CONFIRMVendor Advisory
- https://access.redhat.com/security/cve/CVE-2017-11462 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1488873 x_refsource_CONFIRMIssue TrackingPatchThird Party AdvisoryVDB Entry
- https://github.com/krb5/krb5/commit/56f7b1bc95a2a3eeb420e069e7655fb181ade5cf x_refsource_CONFIRMPatchThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2FPRUP4YVOEBGEROUYWZFEQ64HTMGNED/ vendor-advisoryx_refsource_FEDORA
- https://nvd.nist.gov/vuln/detail/CVE-2017-11462
- https://www.cve.org/CVERecord?id=CVE-2017-11462
| Link | Providers | Tags |
|---|---|---|
| http://krbdev.mit.edu/rt/Ticket/Display.html?id=8598 | x_refsource_CONFIRMVendor Advisory | |
| https://access.redhat.com/security/cve/CVE-2017-11462 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1488873 | x_refsource_CONFIRMIssue TrackingPatchThird Party AdvisoryVDB Entry | |
| https://github.com/krb5/krb5/commit/56f7b1bc95a2a3eeb420e069e7655fb181ade5cf | x_refsource_CONFIRMPatchThird Party Advisory | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2FPRUP4YVOEBGEROUYWZFEQ64HTMGNED/ | vendor-advisoryx_refsource_FEDORA | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-11462 | ||
| https://www.cve.org/CVERecord?id=CVE-2017-11462 |
Change history (0)
No recorded changes yet.