Sun Solaris 10 Kerberos input validation

CVSS Meta Temp Score
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CTI Interest Score
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4.7$5k-$25k0.00

A vulnerability was found in Sun Solaris 10 (Operating System). It has been classified as critical. Affected is an unknown function of the component Kerberos. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. CVE summarizes:

The spnego_gss_accept_sec_context function in lib/gssapi/spnego/spnego_mech.c in MIT Kerberos 5 (aka krb5) 1.5 through 1.6.3, when SPNEGO is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via invalid ContextFlags data in the reqFlags field in a negTokenInit token.

The bug was discovered 03/06/2009. The weakness was presented 04/08/2009 with 0-day (Website). The advisory is shared for download at sunsolve.sun.com. This vulnerability is traded as CVE-2009-0845 since 03/06/2009. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1515 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 36535 (Mandriva Linux Security Advisory : krb5 (MDVSA-2009:082)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Mandriva Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 216010 (VMWare ESXi 4.1.0 Patch Release ESXi410-201010001 Missing (KB1027753)).

The best possible mitigation is suggested to be disabling the affected component. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (49448) and Tenable (36535). See 47630, 47629, 51532 and 53257 for similar entries.

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  • end of life

CPE 2.3info

CPE 2.2info

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CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.7

VulDB Base Score: 5.3
VulDB Temp Score: 4.7
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CVSSv2info

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Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

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Current Price Estimation: 🔍

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Nessus ID: 36535
Nessus Name: Mandriva Linux Security Advisory : krb5 (MDVSA-2009:082)
Nessus File: 🔍
Nessus Risk: 🔍
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OpenVAS ID: 63793
OpenVAS Name: Debian Security Advisory DSA 1766-1 (krb5)
OpenVAS File: 🔍
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Qualys Name: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Disable
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0-Day Time: 🔍

Timelineinfo

01/31/2005 🔍
03/06/2009 +1495 days 🔍
03/06/2009 +0 days 🔍
03/06/2009 +0 days 🔍
03/08/2009 +2 days 🔍
03/20/2009 +12 days 🔍
03/25/2009 +5 days 🔍
03/25/2009 +0 days 🔍
03/27/2009 +1 days 🔍
03/30/2009 +3 days 🔍
04/08/2009 +9 days 🔍
04/13/2009 +5 days 🔍
04/16/2009 +3 days 🔍
04/23/2009 +7 days 🔍
09/01/2019 +3783 days 🔍

Sourcesinfo

Vendor: oracle.com

Advisory: sunsolve.sun.com⛔
Organization: 0-day
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2009-0845 (🔍)
OVAL: 🔍

X-Force: 49448 - MIT Kerberos 5 (krb5) spnego_gss_accept_sec_context() function denial of service, Medium Risk
SecurityTracker: 1021867
Vulnerability Center: 21530 - MIT Kerberos 5 1.5-1.6.3 spnego_gss_accept_sec_context Function Remote DoS Vulnerability, High
SecurityFocus: 34257 - MIT Kerberos 'NegTokenInit' Token Handling Remote Denial Of Service Vulnerability
Secunia: 34347
OSVDB: 52963 - MIT Kerberos 5 (krb5) SPNEGO GSS-API Mechanism spnego_gss_accept_sec_context() Function Null Pointer Dereference DoS
Vupen: ADV-2009-0847

See also: 🔍

Entryinfo

Created: 04/16/2009 13:30
Updated: 09/01/2019 09:29
Changes: 04/16/2009 13:30 (101), 09/01/2019 09:29 (1)
Complete: 🔍

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