Cisco ASA IKE resource management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.2$0-$5k0.00

A vulnerability was found in Cisco ASA (Firewall Software) (the affected version unknown). It has been declared as problematic. This vulnerability affects an unknown part of the component IKE Handler. 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. CVE summarizes:

The VPN authentication functionality in Cisco Adaptive Security Appliance (ASA) Software allows remote attackers to cause a denial of service (device reload) by sending many username-from-cert IKE requests, aka Bug ID CSCua91108.

The weakness was presented 10/21/2013 as CSCua91108 as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. The public release was coordinated in cooperation with the vendor. This vulnerability was named CVE-2013-5544 since 08/22/2013. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are unknown but a public exploit is available.

After immediately, there has been an exploit disclosed. It is possible to download the exploit at tools.cisco.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 72485 (Cisco ASA VPN Denial of Service (CSCua91108)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO.

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the databases at X-Force (88167) and Tenable (72485).

Productinfo

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License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.9
VulDB Temp Score: 5.2
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: 🔍

Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 72485
Nessus Name: Cisco ASA VPN Denial of Service (CSCua91108)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

08/22/2013 🔍
10/21/2013 +60 days 🔍
10/21/2013 +0 days 🔍
10/21/2013 +0 days 🔍
10/22/2013 +1 days 🔍
10/23/2013 +1 days 🔍
11/07/2013 +15 days 🔍
02/13/2014 +98 days 🔍
05/31/2021 +2664 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: CSCua91108
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2013-5544 (🔍)
X-Force: 88167
Vulnerability Center: 42206 - Cisco ASA 8.4(4.5) and Before Remote Denial of Service via username-from-cert IKE Requests, Medium
SecurityFocus: 63262
Secunia: 55420 - Cisco Adaptive Security Appliance (ASA) Certificate Parsing Denial of Service Vulnerabilit, Moderately Critical
OSVDB: 98817

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

Entryinfo

Created: 10/23/2013 16:43
Updated: 05/31/2021 14:48
Changes: 10/23/2013 16:43 (68), 05/15/2017 11:01 (6), 05/31/2021 14:48 (3)
Complete: 🔍
Committer:

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