Cisco TACACS+ 4.0.2/4.0.3 Packet length 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 identified as critical has been detected in Cisco TACACS+ 4.0.2/4.0.3. The impacted element is an unknown function of the component Packet Handler. The manipulation of the argument length leads to memory corruption. This vulnerability is referenced as CVE-2000-0486. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Cisco TACACS+ 4.0.2/4.0.3. It has been rated as critical. This issue affects some unknown functionality of the component Packet Handler. The manipulation of the argument length with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Buffer overflow in Cisco TACACS+ tac_plus server allows remote attackers to cause a denial of service via a malformed packet with a long length field.

The weakness was published 05/30/2000 by Solar Designer as not defined posting (Bugtraq). The advisory is shared at archives.neohapsis.com. The identification of this vulnerability is CVE-2000-0486. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (4985), SecurityFocus (BID 1293†) and Vulnerability Center (SBV-31176†). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

License

Website

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

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: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/30/2000 🔍
05/30/2000 +0 days 🔍
05/30/2000 +0 days 🔍
05/30/2000 +0 days 🔍
04/26/2011 +3983 days 🔍
06/24/2014 +1155 days 🔍
04/21/2026 +4319 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: archives.neohapsis.com
Researcher: Solar Designer
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2000-0486 (🔍)
GCVE (CVE): GCVE-0-2000-0486
GCVE (VulDB): GCVE-100-15605
X-Force: 4985
SecurityFocus: 1293 - TACACS+ Denial of Service Vulnerability
Vulnerability Center: 31176 - Cisco TACACS+ 4.0.3 alpha and 4.0.2 alpha Remote DoS Vulnerability via a Malformed Packet, High

Entryinfo

Created: 06/24/2014 18:20
Updated: 04/21/2026 17:35
Changes: 06/24/2014 18:20 (55), 03/21/2017 11:52 (6), 04/21/2026 17:35 (18)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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