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Vulnerability Details : CVE-2009-4212

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.
Publish Date : 2010-01-13 Last Update Date : 2020-01-21
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of ServiceExecute Code
CWE ID 189

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat critical
AV:N/AC:L/Au:N/C:C/I:C/A:C 2009-12-06 2010-01-12
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- Related OVAL Definitions

Title Definition Id Class Family
CVE-2009-4212 unix
DSA-1969 krb5 -- integer underflow oval:org.mitre.oval:def:7452 unix
DSA-1969-1 krb5 -- integer underflow oval:org.mitre.oval:def:13574 unix
ELSA-2010:0029: krb5 security update (Critical) oval:org.mitre.oval:def:22869 unix
Integer Overflow Security Vulnerability in AES and RC4 Decryption in the Solaris Kerberos Crypto Library May Lead to Exe... oval:org.mitre.oval:def:8192 unix
MIT Kerberos AES and RC4 Decryption Integer Underflow Vulnerabilities oval:org.mitre.oval:def:7357 unix
Multiple integer underflows in the (1) AES and (2) RC4 decryption functionality in the crypto library in MIT Kerberos 5 ... oval:org.mitre.oval:def:11272 unix
RHSA-2010:0029: krb5 security update (Critical) oval:org.mitre.oval:def:21755 unix
RHSA-2010:0029: krb5 security update (Critical) oval:com.redhat.rhsa:def:20100029 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2009-4212

# Product Type Vendor Product Version Update Edition Language
1 Application MIT Kerberos 5-1.6.3 * * * Version Details Vulnerabilities
2 Application MIT Kerberos 5 1.3 * * * Version Details Vulnerabilities
3 Application MIT Kerberos 5 1.3.1 * * * Version Details Vulnerabilities
4 Application MIT Kerberos 5 1.3.2 * * * Version Details Vulnerabilities
5 Application MIT Kerberos 5 1.3.3 * * * Version Details Vulnerabilities
6 Application MIT Kerberos 5 1.3.4 * * * Version Details Vulnerabilities
7 Application MIT Kerberos 5 1.3.5 * * * Version Details Vulnerabilities
8 Application MIT Kerberos 5 1.3.6 * * * Version Details Vulnerabilities
9 Application MIT Kerberos 5 1.4 * * * Version Details Vulnerabilities
10 Application MIT Kerberos 5 1.4.1 * * * Version Details Vulnerabilities
11 Application MIT Kerberos 5 1.4.2 * * * Version Details Vulnerabilities
12 Application MIT Kerberos 5 1.4.3 * * * Version Details Vulnerabilities
13 Application MIT Kerberos 5 1.4.4 * * * Version Details Vulnerabilities
14 Application MIT Kerberos 5 1.5 * * * Version Details Vulnerabilities
15 Application MIT Kerberos 5 1.5.1 * * * Version Details Vulnerabilities
16 Application MIT Kerberos 5 1.5.2 * * * Version Details Vulnerabilities
17 Application MIT Kerberos 5 1.5.3 * * * Version Details Vulnerabilities
18 Application MIT Kerberos 5 1.6 * * * Version Details Vulnerabilities
19 Application MIT Kerberos 5 1.6.1 * * * Version Details Vulnerabilities
20 Application MIT Kerberos 5 1.6.2 * * * Version Details Vulnerabilities
21 Application MIT Kerberos 5 1.7 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
MIT Kerberos 1
MIT Kerberos 5 20

- References For CVE-2009-4212
VUPEN ADV-2010-0096
BID 37749 MIT Kerberos AES and RC4 Decryption Integer Underflow Vulnerabilities Release Date:2010-06-15
SECTRACK 1023440
REDHAT RHSA-2010:0095
SUNALERT 1021779
APPLE APPLE-SA-2010-06-15-1
HP SSRT100495
OVAL oval:org.mitre.oval:def:8192
OVAL oval:org.mitre.oval:def:7357
OVAL oval:org.mitre.oval:def:11272

- Metasploit Modules Related To CVE-2009-4212

There are not any metasploit modules related to this CVE entry (Please visit for more information)

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