(krb5kdc): Double-free flaw by handling error messages upon receiving certain AS_REQ's (MITKRB5-SA-2011-003)
Published Mar 20, 2011
7.6
HIGHCVSS 2.0
EPSS 8.27%
Description
Double free vulnerability in the prepare_error_as function in do_as_req.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.7 through 1.9, when the PKINIT feature is enabled, allows remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code via an e_data field containing typed data.
Affected products
No data.
- 1.7
- 1.7.1
- 1.8
- 1.8.1
- 1.8.2
- 1.8.3
- 1.9
No data.
Red Hat Enterprise Linux 6
krb5-0:1.8.2-3.el6_0.6
Fixed · RHSA-2011:0356
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_0.6 | Fixed | RHSA-2011:0356 |
| 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
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:H/Au:N/C:C/I:C/A:C
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 (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 8.27% (0.08267) | 94.75th | v5 (v2026.06.15) |
| Jun 15, 2026 | 8.27% (0.08267) | 94.18th | v5 (v2026.06.15) |
| Jun 13, 2026 | 24.26% (0.24263) | 96.23th | v4 (v2025.03.14) |
| Nov 9, 2025 | 22.64% (0.22640) | 95.61th | v4 (v2025.03.14) |
| Sep 19, 2025 | 27.66% (0.27659) | 96.28th | v4 (v2025.03.14) |
| Mar 30, 2025 | 24.19% (0.24188) | 95.61th | v4 (v2025.03.14) |
| Mar 29, 2025 | 32.03% (0.32030) | 95.01th | v4 (v2025.03.14) |
| Mar 17, 2025 | 24.19% (0.24188) | 95.61th | v4 (v2025.03.14) |
| Feb 5, 2025 | 53.30% (0.53299) | 97.78th | v3 (v2023.03.01) |
| Dec 17, 2024 | 45.58% (0.45577) | 97.48th | v3 (v2023.03.01) |
| Sep 17, 2023 | 35.56% (0.35559) | 96.62th | v3 (v2023.03.01) |
| Mar 7, 2023 | 28.52% (0.28517) | 96.11th | v3 (v2023.03.01) |
| Mar 6, 2023 | 6.60% (0.06604) | 91.53th | v2 (v2022.01.01) |
| Apr 1, 2022 | 6.60% (0.06604) | 90.72th | v2 (v2022.01.01) |
| Feb 4, 2022 | 6.60% (0.06604) | 78.62th | v2 (v2022.01.01) |
References (27)
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/056413.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/056573.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/056579.html vendor-advisoryx_refsource_FEDORA
- http://lists.opensuse.org/opensuse-security-announce/2011-04/msg00000.html vendor-advisoryx_refsource_SUSE
- http://osvdb.org/71183 vdb-entryx_refsource_OSVDB
- http://secunia.com/advisories/43700 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/43760 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/43783 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/43881 third-party-advisoryx_refsource_SECUNIA
- http://securitytracker.com/id?1025216 vdb-entryx_refsource_SECTRACK
- http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-003.txt x_refsource_CONFIRMPatchVendor Advisory
- http://www.kb.cert.org/vuls/id/943220 third-party-advisoryx_refsource_CERT-VNPatchUS Government Resource
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:048 vendor-advisoryx_refsource_MANDRIVA
- http://www.redhat.com/support/errata/RHSA-2011-0356.html vendor-advisoryx_refsource_REDHAT
- http://www.securityfocus.com/archive/1/517029/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/46881 vdb-entryx_refsource_BID
- http://www.ubuntu.com/usn/USN-1088-1 vendor-advisoryx_refsource_UBUNTU
- http://www.vupen.com/english/advisories/2011/0672 vdb-entryx_refsource_VUPENVendor Advisory
- http://www.vupen.com/english/advisories/2011/0673 vdb-entryx_refsource_VUPENVendor Advisory
- http://www.vupen.com/english/advisories/2011/0680 vdb-entryx_refsource_VUPEN
- http://www.vupen.com/english/advisories/2011/0722 vdb-entryx_refsource_VUPEN
- http://www.vupen.com/english/advisories/2011/0763 vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2011-0284 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=674325 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/66101 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2011-0284
- https://www.cve.org/CVERecord?id=CVE-2011-0284
Change history (0)
No recorded changes yet.