Cisco AnyConnect Secure Mobility Client VPN API COM Active Template Library memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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9.5$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Cisco AnyConnect Secure Mobility Client. The affected element is an unknown function in the library Active Template Library of the component VPN API COM. Such manipulation leads to memory corruption. This vulnerability is uniquely identified as CVE-2013-5559. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as very critical, has been found in Cisco AnyConnect Secure Mobility Client (Network Encryption Software) (unknown version). Affected by this issue is an unknown code block in the library Active Template Library of the component VPN API COM. 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 confidentiality, integrity, and availability. CVE summarizes:

Buffer overflow in the Active Template Library (ATL) framework in the VPNAPI COM module in Cisco AnyConnect Secure Mobility Client 2.x allows user-assisted remote attackers to execute arbitrary code via a crafted HTML document, aka Bug ID CSCuj58139.

The weakness was disclosed 11/01/2013 by Jarrod Johnson and Alex Nikitin with IXIA as Cisco AnyConnect VPNAPI COM Buffer Overflow Vulnerability as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. The public release has been coordinated in cooperation with the vendor. This vulnerability is handled as CVE-2013-5559 since 08/22/2013. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 06/01/2021).

The vulnerability scanner Nessus provides a plugin with the ID 71464 (Cisco AnyConnect Secure Mobility Client 2.x / 3.x < 3.0(629) ATL Buffer Overflow), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (88447), Tenable (71464), SecurityFocus (BID 63491†), OSVDB (99258†) and Vulnerability Center (SBV-42334†). tools.cisco.com is providing further details. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.5

VulDB Base Score: 10.0
VulDB Temp Score: 9.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔍

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Nessus ID: 71464
Nessus Name: Cisco AnyConnect Secure Mobility Client 2.x / 3.x < 3.0(629) ATL Buffer Overflow
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Fortigate IPS: 🔍

Timelineinfo

08/22/2013 🔍
11/01/2013 +71 days 🔍
11/01/2013 +0 days 🔍
11/04/2013 +3 days 🔍
11/05/2013 +1 days 🔍
11/20/2013 +15 days 🔍
12/16/2013 +26 days 🔍
06/01/2021 +2724 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: Cisco AnyConnect VPNAPI COM Buffer Overflow Vulnerability
Researcher: Jarrod Johnson, Alex Nikitin
Organization: IXIA
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2013-5559 (🔍)
GCVE (CVE): GCVE-0-2013-5559
GCVE (VulDB): GCVE-100-11072
X-Force: 88447
SecurityFocus: 63491
OSVDB: 99258
Vulnerability Center: 42334 - Cisco AnyConnect Secure Mobility Client 2.x Remote Code Execution Due to Buffer Overflow, Medium

Misc.: 🔍

Entryinfo

Created: 11/05/2013 09:13
Updated: 06/01/2021 16:35
Changes: 11/05/2013 09:13 (49), 05/15/2017 11:44 (23), 06/01/2021 16:35 (2)
Complete: 🔍
Committer:
Cache ID: 216:B84:103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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