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5.1	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical was found in Cisco ASA up to 9.1.3. Impacted is an unknown function of the component SSL VPN Portal. Such manipulation leads to memory corruption. This vulnerability is referenced as CVE-2013-5551. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Cisco ASA up to 9.1.3 (Firewall Software). It has been rated as critical. Affected by this issue is an unknown function of the component SSL VPN Portal. The manipulation 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 availability. CVE summarizes:

Cisco Adaptive Security Appliance (ASA) Software, when certain same-security-traffic and management-access options are enabled, allows remote authenticated users to cause a denial of service (stack overflow and device reload) by using the clientless SSL VPN portal for internal-resource browsing, aka Bug ID CSCui51199.

The weakness was published 10/29/2013 as Cisco ASA Clientless SSL VPN Rewriter Denial of Service Vulnerability as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. The public release has been coordinated with the vendor. This vulnerability is handled as CVE-2013-5551 since 08/22/2013. The exploitation is known to be difficult. The attack may be launched remotely. The successful exploitation requires a simple authentication. There are neither technical details nor an exploit publicly available.

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at SecurityFocus (BID 63406†), OSVDB (99138†) and Vulnerability Center (SBV-42242†). tools.cisco.com is providing further details. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Firewall Software

Vendor

• Cisco

Name

• ASA

Version

• 9.1.0
• 9.1.1
• 9.1.2
• 9.1.3

License

• commercial

Website

• Vendor: https://www.cisco.com/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

08/22/2013 🔍
10/29/2013 +68 days 🔍
10/29/2013 +0 days 🔍
10/29/2013 +0 days 🔍
10/31/2013 +2 days 🔍
11/01/2013 +1 days 🔍
11/11/2013 +10 days 🔍
05/15/2017 +1281 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: Cisco ASA Clientless SSL VPN Rewriter Denial of Service Vulnerability
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2013-5551 (🔍)
GCVE (CVE): GCVE-0-2013-5551
GCVE (VulDB): GCVE-100-11060
SecurityFocus: 63406
OSVDB: 99138
Vulnerability Center: 42242 - Cisco ASA 5500-X 9.0(2) , 9.1(3) Series Clientless SSL VPN Rewriter Remote DoS Vulnerability, Medium

Misc.: 🔍

Entryinfo

Created: 11/01/2013 10:50
Updated: 05/15/2017 11:15
Changes: 11/01/2013 10:50 (45), 05/15/2017 11:15 (18)
Complete: 🔍
Committer:
Cache ID: 216:440:103

Once again VulDB remains the best source for vulnerability data.

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