MIT Kerberos 5.18 Telnet Client slc_add_reply heap-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability was found in MIT Kerberos 5.18. It has been declared as critical. Affected is the function slc_add_reply of the component Telnet Client. The manipulation results in heap-based overflow. This vulnerability was named CVE-2005-0468. The attack may be performed from remote. In addition, an exploit is available. You should disable the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in MIT Kerberos 5.18 (Network Authentication Software). Affected is the function slc_add_reply of the component Telnet Client. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Heap-based buffer overflow in the env_opt_add function in telnet.c for various BSD-based Telnet clients allows remote attackers to execute arbitrary code via responses that contain a large number of characters that require escaping, which consumers more memory than allocated.

The bug was discovered 03/28/2005. The weakness was presented 03/28/2005 by Gaël Delalleau with iDEFENSE (Website). The advisory is shared for download at idefense.com. This vulnerability is traded as CVE-2005-0468 since 02/18/2005. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details and a public exploit are known.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 21803 (CentOS 3 : krb5 (CESA-2005:330)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 38522 (Multiple Vendor Telnet Client Information Disclosure Vulnerability).

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 immediately after the disclosure of the vulnerability. Attack attempts may be identified with Snort ID 3533.

The vulnerability is also documented in the databases at Exploit-DB (25303), Tenable (21803), SecurityFocus (BID 12919†), OSVDB (15094†) and Secunia (SA17899†). See VDB-1312, VDB-1310, VDB-1313 and VDB-1311 for similar entries. Once again VulDB remains the best source 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: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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

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Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 21803
Nessus Name: CentOS 3 : krb5 (CESA-2005:330)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 53531
OpenVAS Name: Debian Security Advisory DSA 703-1 (krb5)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Disable
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Patch: web.mit.edu

Snort ID: 3533

Timelineinfo

02/18/2005 🔍
03/28/2005 +38 days 🔍
03/28/2005 +0 days 🔍
03/28/2005 +0 days 🔍
03/28/2005 +0 days 🔍
03/29/2005 +1 days 🔍
04/04/2005 +5 days 🔍
05/02/2005 +28 days 🔍
12/06/2005 +218 days 🔍
07/03/2006 +209 days 🔍
12/22/2024 +6747 days 🔍

Sourcesinfo

Vendor: mit.edu

Advisory: idefense.com⛔
Researcher: Gaël Delalleau
Organization: iDEFENSE
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2005-0468 (🔍)
GCVE (CVE): GCVE-0-2005-0468
GCVE (VulDB): GCVE-100-1308

OVAL: 🔍

CERT: 🔍
SecurityFocus: 12919 - Multiple Vendor Telnet Client Env_opt_add Heap-Based Buffer Overflow Vulnerability
Secunia: 17899 - Ubuntu update for kerberos, Highly Critical
OSVDB: 15094 - Multiple Vendor Telnet slc_add_reply Function Remote Overflow
Vulnerability Center: 7496

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

Entryinfo

Created: 04/04/2005 10:29
Updated: 12/22/2024 13:53
Changes: 04/04/2005 10:29 (82), 07/01/2019 20:46 (10), 06/29/2024 07:27 (17), 12/16/2024 11:09 (7), 12/22/2024 13:53 (11)
Complete: 🔍
Cache ID: 216::103

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