MIT Kerberos up to 5-1.6.2 kadm5_modify_policy_internal memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in MIT Kerberos up to 5-1.6.2. This affects the function kadm5_modify_policy_internal. Performing a manipulation results in memory corruption. This vulnerability is identified as CVE-2007-3999. Additionally, an exploit exists. Disabling the affected component is recommended.

Detailsinfo

A vulnerability was found in MIT Kerberos up to 5-1.6.2 (Network Authentication Software). It has been classified as critical. This affects the function kadm5_modify_policy_internal. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Stack-based buffer overflow in the svcauth_gss_validate function in lib/rpc/svc_auth_gss.c in the RPCSEC_GSS RPC library (librpcsecgss) in MIT Kerberos 5 (krb5) 1.4 through 1.6.2, as used by the Kerberos administration daemon (kadmind) and some third-party applications that use krb5, allows remote attackers to cause a denial of service (daemon crash) and probably execute arbitrary code via a long string in an RPC message.

The weakness was released 09/05/2007 by Garrett Wollman with MIT CSAIL (Website). It is possible to read the advisory at web.mit.edu. This vulnerability is uniquely identified as CVE-2007-3999 since 07/25/2007. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a exploit are known.

The exploit is shared for download at saintcorporation.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 67562 (Oracle Linux 5 : krb5 (ELSA-2007-0858)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 156043 (Oracle Enterprise Linux Update for Krb5 (ELSA-2007-0858)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at web.mit.edu. A possible mitigation has been published even before and not after the disclosure of the vulnerability. Attack attempts may be identified with Snort ID 12424. In this case the pattern |00 00 00 00| is used for detection.

The vulnerability is also documented in the databases at X-Force (36437), Tenable (67562), SecurityFocus (BID 25534†), OSVDB (37324†) and Secunia (SA29270†). Entries connected to this vulnerability are available at VDB-3292 and VDB-38642. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.4

VulDB Base Score: 7.3
VulDB Temp Score: 6.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 67562
Nessus Name: Oracle Linux 5 : krb5 (ELSA-2007-0858)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 58587
OpenVAS Name: Debian Security Advisory DSA 1367-1 (krb5)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Saint ID: exploit_info/mit_krb5_rpcsec_gss
Saint Name: MIT Kerberos 5 RPC library RPCSEC_GSS buffer overflow

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Disable
Status: 🔍

0-Day Time: 🔍

Patch: web.mit.edu

Snort ID: 12424
Snort Message: RPC MIT Kerberos kadmind rpc RPCSEC_GSS buffer overflow attempt
Snort Pattern: 🔍

Timelineinfo

07/25/2007 🔍
09/04/2007 +41 days 🔍
09/04/2007 +0 days 🔍
09/04/2007 +0 days 🔍
09/05/2007 +1 days 🔍
09/05/2007 +0 days 🔍
09/05/2007 +0 days 🔍
09/12/2007 +6 days 🔍
03/07/2008 +177 days 🔍
07/12/2013 +1953 days 🔍
01/11/2025 +4201 days 🔍

Sourcesinfo

Vendor: mit.edu

Advisory: web.mit.edu
Researcher: Garrett Wollman
Organization: MIT CSAIL
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2007-3999 (🔍)
GCVE (CVE): GCVE-0-2007-3999
GCVE (VulDB): GCVE-100-3291

OVAL: 🔍

CERT: 🔍
X-Force: 36437 - Kerberos kadmind svcauth_gss_validate buffer overflow, High Risk
SecurityFocus: 25534 - MIT Kerberos 5 KAdminD Server SVCAuth_GSS_Validate Stack Buffer Overflow Vulnerability
Secunia: 29270 - Fedora update for libtirpc, Moderately Critical
OSVDB: 37324 - MIT Kerberos 5 RPCSEC_GSS RPC Library (librpcsecgss) lib/rpc/svc_auth_gss.c svcauth_gss_validate Function Remote Overflow
SecurityTracker: 1018647
Vupen: ADV-2008-0803

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 09/12/2007 15:19
Updated: 01/11/2025 18:41
Changes: 09/12/2007 15:19 (101), 04/29/2019 09:32 (2), 01/11/2025 18:41 (19)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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