Cisco ASA 5500 up to 8.0 Clientless SSL VPN input validation

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.2$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Cisco ASA 5500 up to 8.0. This affects an unknown function of the component Clientless SSL VPN. Such manipulation leads to input validation. This vulnerability is listed as CVE-2008-2735. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Cisco ASA 5500 up to 8.0 (Firewall Software) and classified as critical. Affected by this issue is an unknown functionality of the component Clientless SSL VPN. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. CVE summarizes:

The HTTP server in Cisco Adaptive Security Appliance (ASA) 5500 devices 8.0 before 8.0(3)15 and 8.1 before 8.1(1)5, when configured as a clientless SSL VPN endpoint, does not properly process URIs, which allows remote attackers to cause a denial of service (device reload) via a URI in a crafted SSL or HTTP packet, aka Bug ID CSCsq19369.

The bug was discovered 09/03/2008. The weakness was presented 09/04/2008 (Website). The advisory is available at cisco.com. This vulnerability is handled as CVE-2008-2735 since 06/16/2008. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not 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 (44869), SecurityFocus (BID 30998†), OSVDB (47923†), Secunia (SA31730†) and SecurityTracker (ID 1020812†). See VDB-43899, VDB-43897, VDB-43896 and VDB-43895 for similar entries. If you want to get best quality of vulnerability data, you may have to visit VulDB.

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
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

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-2008-2735 (🔍)
GCVE (CVE): GCVE-0-2008-2735
GCVE (VulDB): GCVE-100-43898
X-Force: 44869
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: 47923 - Cisco ASA URI denial of service
SecurityTracker: 1020812
Vulnerability Center: 19367 - [cisco-sa-20080903-asa] Cisco ASA URI Processing Error Vulnerability in SSL VPNs, High

See also: 🔍

Entryinfo

Created: 03/17/2015 16:11
Updated: 08/16/2019 14:47
Changes: 03/17/2015 16:11 (70), 08/16/2019 14:47 (3)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to stay up to date on a daily basis?

Enable the mail alert feature now!