Cisco ASA 8.4(2)/8.6(1.2) AnyConnect SSL VPN Client Disconnection memory corruption

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.
6.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Cisco ASA 8.4(2)/8.6(1.2) and classified as problematic. Affected is an unknown function of the component AnyConnect SSL VPN Client. Such manipulation as part of Disconnection leads to memory corruption. This vulnerability is listed as CVE-2013-3415. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Cisco ASA 8.4(2)/8.6(1.2) (Firewall Software). Affected by this issue is an unknown code of the component AnyConnect SSL VPN Client. The manipulation as part of a Disconnection 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 8.4.x before 8.4(3) and 8.6.x before 8.6(1.3) does not properly manage memory upon an AnyConnect SSL VPN client disconnection, which allows remote attackers to cause a denial of service (memory consumption, and forwarding outage or system hang) via packets to the disconnected machine s IP address, aka Bug ID CSCtt36737.

The weakness was presented 10/09/2013 as cisco-sa-20131009-asa as confirmed advisory (Website). The advisory is available at tools.cisco.com. This vulnerability is handled as CVE-2013-3415 since 05/06/2013. The attack may be launched remotely. A simple authentication is needed for exploitation. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 70474 (Cisco ASA Software Multiple Vulnerabilities (cisco-sa-20131009-asa)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO. The commercial vulnerability scanner Qualys is able to test this issue with plugin 43394 (Cisco ASA Multiple Vulnerabilities (cisco-sa-20131009-asa)).

Upgrading to version 8.4(3) or 8.6(1.3) 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 X-Force (87780), Tenable (70474), SecurityFocus (BID 62910†), OSVDB (98259†) and Secunia (SA55237†). seclists.org is providing further details. See VDB-10654, VDB-10656, VDB-10657 and VDB-10659 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: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 70474
Nessus Name: Cisco ASA Software Multiple Vulnerabilities (cisco-sa-20131009-asa)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: ASA 8.4(3)/8.6(1.3)

Timelineinfo

05/06/2013 🔍
10/09/2013 +156 days 🔍
10/09/2013 +0 days 🔍
10/09/2013 +0 days 🔍
10/10/2013 +1 days 🔍
10/13/2013 +3 days 🔍
10/13/2013 +0 days 🔍
10/14/2013 +1 days 🔍
10/17/2013 +3 days 🔍
05/26/2021 +2778 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20131009-asa
Status: Confirmed

CVE: CVE-2013-3415 (🔍)
GCVE (CVE): GCVE-0-2013-3415
GCVE (VulDB): GCVE-100-10658

IAVM: 🔍

X-Force: 87780
SecurityFocus: 62910
Secunia: 55237 - Cisco Adaptive Security Appliance (ASA) Multiple Vulnerabilities, Moderately Critical
OSVDB: 98259
Vulnerability Center: 41864 - [cisco-sa-20131009-asa] Cisco ASA Remote Denial of Service via Traffic to a Disconnected AnyConnect SSL VPN Client, High

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 10/14/2013 16:53
Updated: 05/26/2021 15:16
Changes: 10/14/2013 16:53 (79), 05/13/2017 09:45 (1), 05/26/2021 15:16 (3)
Complete: 🔍
Cache ID: 216:694:103

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 ▸

Do you want to use VulDB in your project?

Use the official API to access entries easily!