FreeBSD 4/5 Telnet Client env_opt_add memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in FreeBSD 4/5. This vulnerability affects the function env_opt_add of the component Telnet Client. Executing a manipulation can lead to memory corruption. This vulnerability is tracked as CVE-2005-0469. The attack can be launched remotely. No exploit exists. Disabling the affected component is suggested.

Detailsinfo

A vulnerability was found in FreeBSD 4/5 (Operating System). It has been declared as critical. This vulnerability affects the function env_opt_add of the component Telnet Client. 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. CVE summarizes:

Buffer overflow in the slc_add_reply function in various BSD-based Telnet clients, when handling LINEMODE suboptions, allows remote attackers to execute arbitrary code via a reply with a large number of Set Local Character (SLC) commands.

The bug was discovered 03/28/2005. The weakness was disclosed 03/28/2005 by Gaël Delalleau with iDEFENSE (Website). The advisory is shared for download at idefense.com. This vulnerability was named CVE-2005-0469 since 02/18/2005. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 19270 (Debian DSA-765-1 : heimdal - buffer overflow), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian 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 ftp.FreeBSD.org. A possible mitigation has been published 5 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (19270), SecurityFocus (BID 12918†), OSVDB (15094†), Secunia (SA14763†) and Vulnerability Center (SBV-7495†). The entries VDB-1310, VDB-1308, VDB-1313 and VDB-1311 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

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: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 19270
Nessus Name: Debian DSA-765-1 : heimdal - buffer overflow
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 53528
OpenVAS Name: Debian Security Advisory DSA 697-1 (netkit-telnet)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Disable
Status: 🔍

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

Patch: ftp.FreeBSD.org

Timelineinfo

02/18/2005 🔍
03/28/2005 +38 days 🔍
03/28/2005 +0 days 🔍
03/28/2005 +0 days 🔍
03/29/2005 +1 days 🔍
04/04/2005 +6 days 🔍
05/02/2005 +28 days 🔍
07/22/2005 +81 days 🔍
07/22/2005 +0 days 🔍
12/17/2024 +7088 days 🔍

Sourcesinfo

Product: freebsd.org

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

CVE: CVE-2005-0469 (🔍)
GCVE (CVE): GCVE-0-2005-0469
GCVE (VulDB): GCVE-100-1312

OVAL: 🔍

CERT: 🔍
SecurityFocus: 12918 - Multiple Vendor Telnet Client LINEMODE Sub-Options Remote Buffer Overflow Vulnerability
Secunia: 14763 - FreeBSD update for telnet, Moderately Critical
OSVDB: 15094 - Multiple Telnet Client slc_add_reply function buffer overflow
Vulnerability Center: 7495

See also: 🔍

Entryinfo

Created: 04/04/2005 10:29
Updated: 12/17/2024 05:25
Changes: 04/04/2005 10:29 (87), 07/02/2019 07:16 (4), 06/28/2024 20:04 (17), 12/17/2024 05:25 (7)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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