Cisco VPN 5000 Client up to 5.2.7 on Linux/Solaris close_tunnel/open_tunnel memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.00

A vulnerability was found in Cisco VPN 5000 Client up to 5.2.7 on Linux/Solaris (Network Encryption Software). It has been classified as critical. Affected is the function close_tunnel/open_tunnel. 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. CVE summarizes:

Buffer overflows in the Cisco VPN 5000 Client before 5.2.7 for Linux, and VPN 5000 Client before 5.2.8 for Solaris, allow local users to gain root privileges via (1) close_tunnel and (2) open_tunnel.

The bug was discovered 09/18/2002. The weakness was shared 04/02/2003 by Niels Heinen (Website). The advisory is available at cisco.com. This vulnerability is traded as CVE-2002-1492. The exploitability is told to be easy. Local access is required to approach this attack. The exploitation doesn't require any form of authentication. Technical details and a public exploit are known.

A public exploit has been developed in ANSI C. The exploit is shared for download at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 196 days. During that time the estimated underground price was around $25k-$100k.

Upgrading to version 5.2.8 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at X-Force (10131). The entry 20273 is related to this item.

Productinfo

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Support

  • end of life (old version)

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 9.3
VulDB Meta Temp Score: 8.4

VulDB Base Score: 9.3
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: Yes
Remote: No

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

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EPSS Percentile: 🔍

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Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: VPN 5000 Client 5.2.8

Timelineinfo

09/18/2002 🔍
09/18/2002 +0 days 🔍
09/18/2002 +0 days 🔍
04/02/2003 +196 days 🔍
04/02/2003 +0 days 🔍
04/24/2006 +1118 days 🔍
08/08/2014 +3028 days 🔍
06/16/2019 +1773 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco.com
Researcher: Niels Heinen
Status: Not defined

CVE: CVE-2002-1492 (🔍)
X-Force: 10131
Vulnerability Center: 11205 - [cisco-sa-20020918-vpn5k-vulnerability] Cisco VPNs Buffer Overflow via close/open_tunnel, Medium
SecurityFocus: 5734 - Cisco VPN 5000 Client Buffer Overrun Vulnerabilities
OSVDB: 8878 - Cisco - VPN 5000 Client Server - 'close_tunnel' and 'open_tunnel' Buffer Overruns

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

Entryinfo

Created: 08/08/2014 12:23
Updated: 06/16/2019 17:25
Changes: 08/08/2014 12:23 (65), 06/16/2019 17:25 (5)
Complete: 🔍

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