Cisco ASA 5500 up to 8.0 Clientless SSL VPN resource management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Cisco ASA 5500 up to 8.0. It has been rated as problematic. The impacted element is an unknown function of the component Clientless SSL VPN. This manipulation causes resource management. This vulnerability is tracked as CVE-2008-2734. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in Cisco ASA 5500 up to 8.0 (Firewall Software) and classified as critical. Affected by this vulnerability is an unknown function of the component Clientless SSL VPN. The manipulation with an unknown input leads to a resource management vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect availability. The summary by CVE is:

Memory leak in the crypto functionality in Cisco Adaptive Security Appliance (ASA) 5500 devices 7.2 before 7.2(4)2, 8.0 before 8.0(3)14, and 8.1 before 8.1(1)4, when configured as a clientless SSL VPN endpoint, allows remote attackers to cause a denial of service (memory consumption and VPN hang) via a crafted SSL or HTTP packet, aka Bug ID CSCso66472.

The bug was discovered 09/03/2008. The weakness was disclosed 09/04/2008 (Website). The advisory is shared at cisco.com. This vulnerability is known as CVE-2008-2734 since 06/16/2008. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k.

Upgrading to version 8.1 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (44868), SecurityFocus (BID 30998†), OSVDB (47922†), Secunia (SA31730†) and SecurityTracker (ID 1020812†). The entries VDB-43899, VDB-43898, VDB-43896 and VDB-43895 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
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: Resource management
CWE: CWE-399 / CWE-404
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: 🔍

Upgrade: ASA 5500 8.1

Timelineinfo

06/16/2008 🔍
09/03/2008 +79 days 🔍
09/03/2008 +0 days 🔍
09/03/2008 +0 days 🔍
09/03/2008 +0 days 🔍
09/04/2008 +1 days 🔍
09/04/2008 +0 days 🔍
09/04/2008 +0 days 🔍
09/04/2008 +0 days 🔍
03/17/2015 +2385 days 🔍
08/16/2019 +1613 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco.com
Status: Confirmed

CVE: CVE-2008-2734 (🔍)
GCVE (CVE): GCVE-0-2008-2734
GCVE (VulDB): GCVE-100-43897
X-Force: 44868
SecurityFocus: 30998 - Cisco PIX and Cisco ASA Multiple Denial of Service and Information Disclosure Vulnerabilities
Secunia: 31730 - Cisco ASA and PIX Security Appliances Multiple Vulnerabilities, Moderately Critical
OSVDB: 47922 - Cisco ASA SSL VPN denial of service
SecurityTracker: 1020812
Vulnerability Center: 19366 - [cisco-sa-20080903-asa] Cisco ASA SSL VPN Memory Leak Vulnerability, High

See also: 🔍

Entryinfo

Created: 03/17/2015 16:11
Updated: 08/16/2019 14:42
Changes: 03/17/2015 16:11 (70), 08/16/2019 14:42 (3)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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