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CVE-2009-4212

Multiple integer underflows in the (1) AES and (2) RC4 decryption functionality in the crypto...

10.0 HighFix available

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.

Exploit likelihood

7.55%Down 0.7 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 10.0

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.

Record
CVE-2009-4212
CVSS 2.0
10.0 HighAV:N/AC:L/Au:N/C:C/I:C/A:C
Weakness
CWE-189
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2009-4212
Updated
2026-11-02
EUVDEUVD-2009-4182 No score

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.

Record
EUVD-2009-4182
Updated
2026-11-03
GitHub AdvisoriesGHSA-39cv-j24w-8wvf No score

Multiple integer underflows in the (1) AES and (2) RC4 decryption functionality in the crypto...

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.

Record
GHSA-39cv-j24w-8wvf
Updated
2026-11-02
OSV No score

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.

Record
CVE-2009-4212
Updated
2026-11-02
OSVDEBIAN-CVE-2009-4212 No score

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.

Record
DEBIAN-CVE-2009-4212
Updated
2026-11-02
OSVopenSUSE-SU-2024:10004-1 No score

krb5-1.15-1.1 on GA media

These are all security issues fixed in the krb5-1.15-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10004-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
krb5
Debian:12
 before 1.8+dfsg~alpha1-1
1.8+dfsg~alpha1-1
krb5
Debian:13
 before 1.8+dfsg~alpha1-1
1.8+dfsg~alpha1-1
krb5
Debian:14
 before 1.8+dfsg~alpha1-1
1.8+dfsg~alpha1-1
krb5
Debian:4.0
 before 1.4.4-7etch8, plus listed versions
1.4.4-7etch11.4.4-7etch21.4.4-7etch31.4.4-7etch41.4.4-7etch51.4.4-7etch61.4.4-7etch7
1.4.4-7etch8
krb5
Debian:5.0
 before 1.6.dfsg.4~beta1-5lenny2, plus listed versions
1.6.dfsg.4~beta1-51.6.dfsg.4~beta1-5lenny1
1.6.dfsg.4~beta1-5lenny2
krb5
Red Hat:enterprise_linux:3::as
 before 0:1.2.7-71
0:1.2.7-71
krb5-debuginfo
Red Hat:enterprise_linux:3::as
 before 0:1.2.7-71
0:1.2.7-71
krb5-devel
Red Hat:enterprise_linux:3::as
 before 0:1.2.7-71
0:1.2.7-71
krb5-libs
Red Hat:enterprise_linux:3::as
 before 0:1.2.7-71
0:1.2.7-71
krb5-server
Red Hat:enterprise_linux:3::as
 before 0:1.2.7-71
0:1.2.7-71
Show 82 moreShow less
Affected packages
PackageAffectedFixed
krb5-workstation
Red Hat:enterprise_linux:3::as
 before 0:1.2.7-71
0:1.2.7-71
krb5
Red Hat:enterprise_linux:3::desktop
 before 0:1.2.7-71
0:1.2.7-71
krb5-debuginfo
Red Hat:enterprise_linux:3::desktop
 before 0:1.2.7-71
0:1.2.7-71
krb5-devel
Red Hat:enterprise_linux:3::desktop
 before 0:1.2.7-71
0:1.2.7-71
krb5-libs
Red Hat:enterprise_linux:3::desktop
 before 0:1.2.7-71
0:1.2.7-71
krb5-server
Red Hat:enterprise_linux:3::desktop
 before 0:1.2.7-71
0:1.2.7-71
krb5-workstation
Red Hat:enterprise_linux:3::desktop
 before 0:1.2.7-71
0:1.2.7-71
krb5
Red Hat:enterprise_linux:3::es
 before 0:1.2.7-71
0:1.2.7-71
krb5-debuginfo
Red Hat:enterprise_linux:3::es
 before 0:1.2.7-71
0:1.2.7-71
krb5-devel
Red Hat:enterprise_linux:3::es
 before 0:1.2.7-71
0:1.2.7-71
krb5-libs
Red Hat:enterprise_linux:3::es
 before 0:1.2.7-71
0:1.2.7-71
krb5-server
Red Hat:enterprise_linux:3::es
 before 0:1.2.7-71
0:1.2.7-71
krb5-workstation
Red Hat:enterprise_linux:3::es
 before 0:1.2.7-71
0:1.2.7-71
krb5
Red Hat:enterprise_linux:3::ws
 before 0:1.2.7-71
0:1.2.7-71
krb5-debuginfo
Red Hat:enterprise_linux:3::ws
 before 0:1.2.7-71
0:1.2.7-71
krb5-devel
Red Hat:enterprise_linux:3::ws
 before 0:1.2.7-71
0:1.2.7-71
krb5-libs
Red Hat:enterprise_linux:3::ws
 before 0:1.2.7-71
0:1.2.7-71
krb5-server
Red Hat:enterprise_linux:3::ws
 before 0:1.2.7-71
0:1.2.7-71
krb5-workstation
Red Hat:enterprise_linux:3::ws
 before 0:1.2.7-71
0:1.2.7-71
krb5
Red Hat:rhel_eus:4.7::as
 before 0:1.3.4-60.el4_7.3
0:1.3.4-60.el4_7.3
krb5-debuginfo
Red Hat:rhel_eus:4.7::as
 before 0:1.3.4-60.el4_7.3
0:1.3.4-60.el4_7.3
krb5-devel
Red Hat:rhel_eus:4.7::as
 before 0:1.3.4-60.el4_7.3
0:1.3.4-60.el4_7.3
krb5-libs
Red Hat:rhel_eus:4.7::as
 before 0:1.3.4-60.el4_7.3
0:1.3.4-60.el4_7.3
krb5-server
Red Hat:rhel_eus:4.7::as
 before 0:1.3.4-60.el4_7.3
0:1.3.4-60.el4_7.3
krb5-workstation
Red Hat:rhel_eus:4.7::as
 before 0:1.3.4-60.el4_7.3
0:1.3.4-60.el4_7.3
krb5
Red Hat:enterprise_linux:4::as
 before 0:1.3.4-62.el4_8.1
0:1.3.4-62.el4_8.1
krb5-debuginfo
Red Hat:enterprise_linux:4::as
 before 0:1.3.4-62.el4_8.1
0:1.3.4-62.el4_8.1
krb5-devel
Red Hat:enterprise_linux:4::as
 before 0:1.3.4-62.el4_8.1
0:1.3.4-62.el4_8.1
krb5-libs
Red Hat:enterprise_linux:4::as
 before 0:1.3.4-62.el4_8.1
0:1.3.4-62.el4_8.1
krb5-server
Red Hat:enterprise_linux:4::as
 before 0:1.3.4-62.el4_8.1
0:1.3.4-62.el4_8.1
krb5-workstation
Red Hat:enterprise_linux:4::as
 before 0:1.3.4-62.el4_8.1
0:1.3.4-62.el4_8.1
krb5
Red Hat:enterprise_linux:4::desktop
 before 0:1.3.4-62.el4_8.1
0:1.3.4-62.el4_8.1
krb5-debuginfo
Red Hat:enterprise_linux:4::desktop
 before 0:1.3.4-62.el4_8.1
0:1.3.4-62.el4_8.1
krb5-devel
Red Hat:enterprise_linux:4::desktop
 before 0:1.3.4-62.el4_8.1
0:1.3.4-62.el4_8.1
krb5-libs
Red Hat:enterprise_linux:4::desktop
 before 0:1.3.4-62.el4_8.1
0:1.3.4-62.el4_8.1
krb5-server
Red Hat:enterprise_linux:4::desktop
 before 0:1.3.4-62.el4_8.1
0:1.3.4-62.el4_8.1
krb5-workstation
Red Hat:enterprise_linux:4::desktop
 before 0:1.3.4-62.el4_8.1
0:1.3.4-62.el4_8.1
krb5
Red Hat:rhel_eus:4.7::es
 before 0:1.3.4-60.el4_7.3
0:1.3.4-60.el4_7.3
krb5-debuginfo
Red Hat:rhel_eus:4.7::es
 before 0:1.3.4-60.el4_7.3
0:1.3.4-60.el4_7.3
krb5-devel
Red Hat:rhel_eus:4.7::es
 before 0:1.3.4-60.el4_7.3
0:1.3.4-60.el4_7.3
krb5-libs
Red Hat:rhel_eus:4.7::es
 before 0:1.3.4-60.el4_7.3
0:1.3.4-60.el4_7.3
krb5-server
Red Hat:rhel_eus:4.7::es
 before 0:1.3.4-60.el4_7.3
0:1.3.4-60.el4_7.3
krb5-workstation
Red Hat:rhel_eus:4.7::es
 before 0:1.3.4-60.el4_7.3
0:1.3.4-60.el4_7.3
krb5
Red Hat:enterprise_linux:4::es
 before 0:1.3.4-62.el4_8.1
0:1.3.4-62.el4_8.1
krb5-debuginfo
Red Hat:enterprise_linux:4::es
 before 0:1.3.4-62.el4_8.1
0:1.3.4-62.el4_8.1
krb5-devel
Red Hat:enterprise_linux:4::es
 before 0:1.3.4-62.el4_8.1
0:1.3.4-62.el4_8.1
krb5-libs
Red Hat:enterprise_linux:4::es
 before 0:1.3.4-62.el4_8.1
0:1.3.4-62.el4_8.1
krb5-server
Red Hat:enterprise_linux:4::es
 before 0:1.3.4-62.el4_8.1
0:1.3.4-62.el4_8.1
krb5-workstation
Red Hat:enterprise_linux:4::es
 before 0:1.3.4-62.el4_8.1
0:1.3.4-62.el4_8.1
krb5
Red Hat:enterprise_linux:4::ws
 before 0:1.3.4-62.el4_8.1
0:1.3.4-62.el4_8.1
krb5-debuginfo
Red Hat:enterprise_linux:4::ws
 before 0:1.3.4-62.el4_8.1
0:1.3.4-62.el4_8.1
krb5-devel
Red Hat:enterprise_linux:4::ws
 before 0:1.3.4-62.el4_8.1
0:1.3.4-62.el4_8.1
krb5-libs
Red Hat:enterprise_linux:4::ws
 before 0:1.3.4-62.el4_8.1
0:1.3.4-62.el4_8.1
krb5-server
Red Hat:enterprise_linux:4::ws
 before 0:1.3.4-62.el4_8.1
0:1.3.4-62.el4_8.1
krb5-workstation
Red Hat:enterprise_linux:4::ws
 before 0:1.3.4-62.el4_8.1
0:1.3.4-62.el4_8.1
krb5
Red Hat:enterprise_linux:5::client_workstation
 before 0:1.6.1-36.el5_4.1
0:1.6.1-36.el5_4.1
krb5-debuginfo
Red Hat:enterprise_linux:5::client_workstation
 before 0:1.6.1-36.el5_4.1
0:1.6.1-36.el5_4.1
krb5-devel
Red Hat:enterprise_linux:5::client_workstation
 before 0:1.6.1-36.el5_4.1
0:1.6.1-36.el5_4.1
krb5-server
Red Hat:enterprise_linux:5::client_workstation
 before 0:1.6.1-36.el5_4.1
0:1.6.1-36.el5_4.1
krb5
Red Hat:enterprise_linux:5::client
 before 0:1.6.1-36.el5_4.1
0:1.6.1-36.el5_4.1
krb5-debuginfo
Red Hat:enterprise_linux:5::client
 before 0:1.6.1-36.el5_4.1
0:1.6.1-36.el5_4.1
krb5-libs
Red Hat:enterprise_linux:5::client
 before 0:1.6.1-36.el5_4.1
0:1.6.1-36.el5_4.1
krb5-workstation
Red Hat:enterprise_linux:5::client
 before 0:1.6.1-36.el5_4.1
0:1.6.1-36.el5_4.1
krb5
Red Hat:rhel_eus:5.2
 before 0:1.6.1-25.el5_2.3
0:1.6.1-25.el5_2.3
krb5-debuginfo
Red Hat:rhel_eus:5.2
 before 0:1.6.1-25.el5_2.3
0:1.6.1-25.el5_2.3
krb5-devel
Red Hat:rhel_eus:5.2
 before 0:1.6.1-25.el5_2.3
0:1.6.1-25.el5_2.3
krb5-libs
Red Hat:rhel_eus:5.2
 before 0:1.6.1-25.el5_2.3
0:1.6.1-25.el5_2.3
krb5-server
Red Hat:rhel_eus:5.2
 before 0:1.6.1-25.el5_2.3
0:1.6.1-25.el5_2.3
krb5-workstation
Red Hat:rhel_eus:5.2
 before 0:1.6.1-25.el5_2.3
0:1.6.1-25.el5_2.3
krb5
Red Hat:rhel_eus:5.3
 before 0:1.6.1-31.el5_3.4
0:1.6.1-31.el5_3.4
krb5-debuginfo
Red Hat:rhel_eus:5.3
 before 0:1.6.1-31.el5_3.4
0:1.6.1-31.el5_3.4
krb5-devel
Red Hat:rhel_eus:5.3
 before 0:1.6.1-31.el5_3.4
0:1.6.1-31.el5_3.4
krb5-libs
Red Hat:rhel_eus:5.3
 before 0:1.6.1-31.el5_3.4
0:1.6.1-31.el5_3.4
krb5-server
Red Hat:rhel_eus:5.3
 before 0:1.6.1-31.el5_3.4
0:1.6.1-31.el5_3.4
krb5-workstation
Red Hat:rhel_eus:5.3
 before 0:1.6.1-31.el5_3.4
0:1.6.1-31.el5_3.4
krb5
Red Hat:enterprise_linux:5::server
 before 0:1.6.1-36.el5_4.1
0:1.6.1-36.el5_4.1
krb5-debuginfo
Red Hat:enterprise_linux:5::server
 before 0:1.6.1-36.el5_4.1
0:1.6.1-36.el5_4.1
krb5-devel
Red Hat:enterprise_linux:5::server
 before 0:1.6.1-36.el5_4.1
0:1.6.1-36.el5_4.1
krb5-libs
Red Hat:enterprise_linux:5::server
 before 0:1.6.1-36.el5_4.1
0:1.6.1-36.el5_4.1
krb5-server
Red Hat:enterprise_linux:5::server
 before 0:1.6.1-36.el5_4.1
0:1.6.1-36.el5_4.1
krb5-workstation
Red Hat:enterprise_linux:5::server
 before 0:1.6.1-36.el5_4.1
0:1.6.1-36.el5_4.1
krb5
openSUSE:Tumbleweed
From an advisory covering 54 CVEs
 before 1.15-1.1
1.15-1.1

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2009-4212 is a high vulnerability (CVSS 10.0) in Mit Kerberos, published January 12, 2010. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 7.55%, the 94th percentile. Fixed in krb5 1.8+dfsg~alpha1-1.

References

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