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Vulnerability Details : CVE-2009-0846

The asn1_decode_generaltime function in lib/krb5/asn.1/asn1_decode.c in the ASN.1 GeneralizedTime decoder in MIT Kerberos 5 (aka krb5) before 1.6.4 allows remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code via vectors involving an invalid DER encoding that triggers a free of an uninitialized pointer.
Publish Date : 2009-04-08 Last Update Date : 2018-10-10
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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

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat critical
AV:N/AC:M/Au:N/C:C/I:C/A:C 2009-03-18 2009-04-07
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- Related OVAL Definitions

Title Definition Id Class Family
CVE-2009-0846 unix
DSA-1766 krb5 -- several vulnerabilities oval:org.mitre.oval:def:8181 unix
DSA-1766-1 krb5 -- several oval:org.mitre.oval:def:13177 unix
ELSA-2009:0408: krb5 security update (Important) oval:org.mitre.oval:def:22765 unix
HP-UX Running Kerberos, Remote Denial of Service (DoS), Execution of Arbitrary Code oval:org.mitre.oval:def:6301 unix
Kerberos ASN.1 GeneralizedTime Decoder Bug Lets Remote Users Execute Arbitrary Code oval:org.mitre.oval:def:5483 unix
RHSA-2009:0408 -- krb5 security update (Important) oval:org.mitre.oval:def:28421 unix
RHSA-2009:0408: krb5 security update (Important) oval:com.redhat.rhsa:def:20090408 unix
RHSA-2009:0409: krb5 security update (Important) oval:com.redhat.rhsa:def:20090409 unix
RHSA-2009:0410: krb5 security update (Critical) oval:com.redhat.rhsa:def:20090410 unix
The asn1_decode_generaltime function in lib/krb5/asn.1/asn1_decode.c in the ASN.1 GeneralizedTime decoder in MIT Kerbero... oval:org.mitre.oval:def:10694 unix
USN-755-1 -- krb5 vulnerabilities oval:org.mitre.oval:def:13874 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-2009-0846

# Product Type Vendor Product Version Update Edition Language
1 Application MIT Kerberos 5 Version Details Vulnerabilities
2 Application MIT Kerberos 5 1.0 Version Details Vulnerabilities
3 Application MIT Kerberos 5 1.0.6 Version Details Vulnerabilities
4 Application MIT Kerberos 5 1.1 Version Details Vulnerabilities
5 Application MIT Kerberos 5-1.1 Version Details Vulnerabilities
6 Application MIT Kerberos 5 1.1.1 Version Details Vulnerabilities
7 Application MIT Kerberos 5-1.2 Version Details Vulnerabilities
8 Application MIT Kerberos 5 1.2 Beta1 Version Details Vulnerabilities
9 Application MIT Kerberos 5 1.2 Beta2 Version Details Vulnerabilities
10 Application MIT Kerberos 5-1.2.1 Version Details Vulnerabilities
11 Application MIT Kerberos 5-1.2.2 Version Details Vulnerabilities
12 Application MIT Kerberos 5-1.2.3 Version Details Vulnerabilities
13 Application MIT Kerberos 5-1.2.4 Version Details Vulnerabilities
14 Application MIT Kerberos 5-1.2.5 Version Details Vulnerabilities
15 Application MIT Kerberos 5-1.2.6 Version Details Vulnerabilities
16 Application MIT Kerberos 5-1.2.7 Version Details Vulnerabilities
17 Application MIT Kerberos 5-1.2.8 Version Details Vulnerabilities
18 Application MIT Kerberos 5-1.3 Alpha1 Version Details Vulnerabilities
19 Application MIT Kerberos 5-1.3 Version Details Vulnerabilities
20 Application MIT Kerberos 5-1.3.1 Version Details Vulnerabilities
21 Application MIT Kerberos 5-1.3.2 Version Details Vulnerabilities
22 Application MIT Kerberos 5 1.3.3 Version Details Vulnerabilities
23 Application MIT Kerberos 5-1.3.3 Version Details Vulnerabilities
24 Application MIT Kerberos 5-1.3.4 Version Details Vulnerabilities
25 Application MIT Kerberos 5-1.3.5 Version Details Vulnerabilities
26 Application MIT Kerberos 5-1.3.6 Version Details Vulnerabilities
27 Application MIT Kerberos 5-1.4 Version Details Vulnerabilities
28 Application MIT Kerberos 5-1.4.1 Version Details Vulnerabilities
29 Application MIT Kerberos 5-1.4.2 Version Details Vulnerabilities
30 Application MIT Kerberos 5-1.4.3 Version Details Vulnerabilities
31 Application MIT Kerberos 5-1.4.4 Version Details Vulnerabilities
32 Application MIT Kerberos 5-1.5 Version Details Vulnerabilities
33 Application MIT Kerberos 5-1.5.1 Version Details Vulnerabilities
34 Application MIT Kerberos 5-1.5.2 Version Details Vulnerabilities
35 Application MIT Kerberos 5-1.5.3 Version Details Vulnerabilities
36 Application MIT Kerberos 5-1.6 Version Details Vulnerabilities
37 Application MIT Kerberos 5-1.6.1 Version Details Vulnerabilities
38 Application MIT Kerberos 5-1.6.2 Version Details Vulnerabilities
39 Application MIT Kerberos 5-1.6.3 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
MIT Kerberos 39

- References For CVE-2009-0846
VUPEN ADV-2009-2248
VUPEN ADV-2009-1297
VUPEN ADV-2009-2084
VUPEN ADV-2009-1106
VUPEN ADV-2009-1057
VUPEN ADV-2009-0976
CERT TA09-133A
SECTRACK 1021994
BID 34409 MIT Kerberos 'asn1_decode_generaltime()' Uninitialized Pointer Memory Corruption Vulnerability Release Date:2013-01-31
BUGTRAQ 20090701 VMSA-2009-0008 ESX Service Console update for krb5
BUGTRAQ 20090407 rPSA-2009-0058-1 krb5 krb5-server krb5-services krb5-test krb5-workstation
BUGTRAQ 20090407 MITKRB5-SA-2009-002: ASN.1 decoder frees uninitialized pointer [CVE-2009-0846]
REDHAT RHSA-2009:0408
GENTOO GLSA-200904-09
REDHAT RHSA-2009:0410
REDHAT RHSA-2009:0409
APPLE APPLE-SA-2009-05-12
MLIST [security-announce] 20090701 VMSA-2009-0008 ESX Service Console update for krb5

- Metasploit Modules Related To CVE-2009-0846

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

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