MIT Kerberos 5-1.6 k5unseal.c memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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8.9$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in MIT Kerberos 5-1.6. Impacted is an unknown function in the library lib/gssapi/krb5/k5unseal.c. This manipulation causes memory corruption. The identification of this vulnerability is CVE-2007-1216. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in MIT Kerberos 5-1.6 (Network Authentication Software). Affected by this vulnerability is an unknown code in the library lib/gssapi/krb5/k5unseal.c. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Double free vulnerability in the GSS-API library (lib/gssapi/krb5/k5unseal.c), as used by the Kerberos administration daemon (kadmind) in MIT krb5 before 1.6.1, when used with the authentication method provided by the RPCSEC_GSS RPC library, allows remote authenticated users to execute arbitrary code and modify the Kerberos key database via a message with an "an invalid direction encoding".

The bug was discovered 04/03/2007. The weakness was shared 04/05/2007 as confirmed advisory (CERT.org). It is possible to read the advisory at kb.cert.org. This vulnerability is known as CVE-2007-1216 since 03/02/2007. The attack can be launched remotely. A single authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 26144 (HP-UX PHSS_34991 : HP-UX running Kerberos, Remote Arbitrary Code Execution (HPSBUX02217 SSRT071337 rev.2)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family HP-UX Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 156081 (Oracle Enterprise Linux Update for krb5 (ELSA-2007-0095)).

Upgrading to version 1.6.1 eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (33413), Tenable (26144), SecurityFocus (BID 23282†), OSVDB (34105†) and Secunia (SA24706†). The entries VDB-36017 and VDB-36016 are related to this item. 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: 9.9
VulDB Meta Temp Score: 8.9

VulDB Base Score: 9.9
VulDB Temp Score: 8.9
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: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 26144
Nessus Name: HP-UX PHSS_34991 : HP-UX running Kerberos, Remote Arbitrary Code Execution (HPSBUX02217 SSRT071337 rev.2)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 58328
OpenVAS Name: Debian Security Advisory DSA 1276-1 (krb5)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Kerberos 1.6.1

Timelineinfo

03/02/2007 🔍
04/03/2007 +32 days 🔍
04/03/2007 +0 days 🔍
04/03/2007 +0 days 🔍
04/03/2007 +0 days 🔍
04/04/2007 +1 days 🔍
04/05/2007 +1 days 🔍
04/05/2007 +0 days 🔍
04/10/2007 +5 days 🔍
05/08/2007 +28 days 🔍
09/25/2007 +140 days 🔍
03/13/2015 +2726 days 🔍
01/12/2025 +3593 days 🔍

Sourcesinfo

Vendor: mit.edu

Advisory: kb.cert.org
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2007-1216 (🔍)
GCVE (CVE): GCVE-0-2007-1216
GCVE (VulDB): GCVE-100-36019

OVAL: 🔍

CERT: 🔍
X-Force: 33413
SecurityFocus: 23282 - MIT Kerberos Administration Daemon Kadmind Double Free Memory Corruption Vulnerabilities
Secunia: 24706 - Ubuntu update for krb5, Moderately Critical
OSVDB: 34105 - CVE-2007-1216 - MIT - Kerberos - Double Free Issue
SecurityTracker: 1017852
Vulnerability Center: 14785 - MIT Kerberos 5 GSS-API Library Double-Free Vulnerability, High
Vupen: ADV-2007-1218

See also: 🔍

Entryinfo

Created: 03/13/2015 14:56
Updated: 01/12/2025 19:13
Changes: 03/13/2015 14:56 (90), 07/17/2019 14:17 (4), 01/12/2025 19:13 (17)
Complete: 🔍
Cache ID: 216:DB1:103

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