krb: KDC integer overflows in AES and RC4 decryption routines (MITKRB5-SA-2009-004)
Published Jan 13, 2010
10.0
HIGHCVSS 2.0
EPSS 7.55%
Description
Multiple integer underflows in the (1) AES and (2) RC4 decryption functionality in the crypto library in MIT Kerberos 5 (aka krb5) 1.3 through 1.6.3, and 1.7 before 1.7.1, allow remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code by providing ciphertext with a length that is too short to be valid.
Affected products
No data.
- 5-1.6.3
- 1.3
- 1.3.1
- 1.3.2
- 1.3.3
- 1.3.4
- 1.3.5
- 1.3.6
- 1.4
- 1.4.1
- 1.4.2
- 1.4.3
- 1.4.4
- 1.5
- 1.5.1
- 1.5.2
- 1.5.3
- 1.6
- 1.6.1
- 1.6.2
- 1.7
No data.
Red Hat Enterprise Linux 3
krb5-0:1.2.7-71
Fixed · RHSA-2010:0029
Red Hat Enterprise Linux 4
krb5-0:1.3.4-62.el4_8.1
Fixed · RHSA-2010:0029
Red Hat Enterprise Linux 4.7 Z Stream
krb5-0:1.3.4-60.el4_7.3
Fixed · RHSA-2010:0029
Red Hat Enterprise Linux 5
krb5-0:1.6.1-36.el5_4.1
Fixed · RHSA-2010:0029
Red Hat Enterprise Linux 5.2 Z Stream
krb5-0:1.6.1-25.el5_2.3
Fixed · RHSA-2010:0029
Red Hat Enterprise Linux 5.3.Z - Server Only
krb5-0:1.6.1-31.el5_3.4
Fixed · RHSA-2010:0029
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 3 | krb5-0:1.2.7-71 | Fixed | RHSA-2010:0029 |
| Red Hat Enterprise Linux 4 | krb5-0:1.3.4-62.el4_8.1 | Fixed | RHSA-2010:0029 |
| Red Hat Enterprise Linux 4.7 Z Stream | krb5-0:1.3.4-60.el4_7.3 | Fixed | RHSA-2010:0029 |
| Red Hat Enterprise Linux 5 | krb5-0:1.6.1-36.el5_4.1 | Fixed | RHSA-2010:0029 |
| Red Hat Enterprise Linux 5.2 Z Stream | krb5-0:1.6.1-25.el5_2.3 | Fixed | RHSA-2010:0029 |
| Red Hat Enterprise Linux 5.3.Z - Server Only | krb5-0:1.6.1-31.el5_3.4 | Fixed | RHSA-2010:0029 |
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:L/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 3, 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 (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 7.55% (0.07553) | 94.35th | v5 (v2026.06.15) |
| Jun 15, 2026 | 7.35% (0.07351) | 93.58th | v5 (v2026.06.15) |
| Nov 9, 2025 | 16.48% (0.16485) | 94.61th | v4 (v2025.03.14) |
| Mar 30, 2025 | 20.91% (0.20912) | 95.14th | v4 (v2025.03.14) |
| Mar 29, 2025 | 29.32% (0.29323) | 94.62th | v4 (v2025.03.14) |
| Mar 17, 2025 | 20.91% (0.20912) | 95.16th | v4 (v2025.03.14) |
| Dec 12, 2024 | 12.01% (0.12010) | 95.59th | v3 (v2023.03.01) |
| Jun 1, 2024 | 12.01% (0.12010) | 95.36th | v3 (v2023.03.01) |
| Mar 7, 2023 | 12.15% (0.12147) | 94.43th | v3 (v2023.03.01) |
| Mar 6, 2023 | 8.23% (0.08228) | 93.49th | v2 (v2022.01.01) |
| Apr 1, 2022 | 8.23% (0.08228) | 92.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 8.23% (0.08228) | 82.23th | v2 (v2022.01.01) |
References (34)
- http://lists.apple.com/archives/security-announce/2010//Jun/msg00001.html vendor-advisoryx_refsource_APPLE
- http://lists.fedoraproject.org/pipermail/package-announce/2010-January/033915.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2010-January/033919.html vendor-advisoryx_refsource_FEDORA
- http://marc.info/?l=bugtraq&m=130497213107107&w=2 vendor-advisoryx_refsource_HP
- http://secunia.com/advisories/38080 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/38108 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/38126 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/38140 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/38184 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/38203 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/38696 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/40220 third-party-advisoryx_refsource_SECUNIA
- http://sunsolve.sun.com/search/document.do?assetkey=1-66-275530-1 vendor-advisoryx_refsource_SUNALERT
- http://sunsolve.sun.com/search/document.do?assetkey=1-77-1021779.1-1 vendor-advisoryx_refsource_SUNALERT
- http://support.apple.com/kb/HT4188 x_refsource_CONFIRM
- http://support.avaya.com/css/P8/documents/100074869 x_refsource_CONFIRM
- http://ubuntu.com/usn/usn-881-1 vendor-advisoryx_refsource_UBUNTU
- http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2009-004.txt x_refsource_CONFIRMPatchVendor Advisory
- http://www.debian.org/security/2010/dsa-1969 vendor-advisoryx_refsource_DEBIAN
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:006 vendor-advisoryx_refsource_MANDRIVA
- http://www.securityfocus.com/bid/37749 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1023440 vdb-entryx_refsource_SECTRACK
- http://www.vupen.com/english/advisories/2010/0096 vdb-entryx_refsource_VUPEN
- http://www.vupen.com/english/advisories/2010/0129 vdb-entryx_refsource_VUPEN
- http://www.vupen.com/english/advisories/2010/1481 vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2009-4212 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=545015 x_refsource_CONFIRMPatchIssue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2009-4212
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11272 vdb-entrysignaturex_refsource_OVAL
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7357 vdb-entrysignaturex_refsource_OVAL
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8192 vdb-entrysignaturex_refsource_OVAL
- https://rhn.redhat.com/errata/RHSA-2010-0029.html vendor-advisoryx_refsource_REDHAT
- https://rhn.redhat.com/errata/RHSA-2010-0095.html vendor-advisoryx_refsource_REDHAT
- https://www.cve.org/CVERecord?id=CVE-2009-4212
Change history (0)
No recorded changes yet.