Cisco Adaptive Security Device Manager Signature Verification code injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.2$0-$5k0.00

A vulnerability classified as critical was found in Cisco Adaptive Security Device Manager (the affected version is unknown). This vulnerability affects some unknown functionality of the component Signature Verification Handler. The manipulation with an unknown input leads to a privilege escalation vulnerability. The CWE definition for the vulnerability is CWE-94. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A vulnerability in the Cisco Adaptive Security Device Manager (ASDM) Launcher could allow an unauthenticated, remote attacker to execute arbitrary code on a user's operating system. This vulnerability is due to a lack of proper signature verification for specific code exchanged between the ASDM and the Launcher. An attacker could exploit this vulnerability by leveraging a man-in-the-middle position on the network to intercept the traffic between the Launcher and the ASDM and then inject arbitrary code. A successful exploit could allow the attacker to execute arbitrary code on the user's operating system with the level of privileges assigned to the ASDM Launcher. A successful exploit may require the attacker to perform a social engineering attack to persuade the user to initiate communication from the Launcher to the ASDM.

The bug was discovered 12/10/2020. The weakness was presented 07/09/2021 as cisco-sa-asdm-rce-gqjShXW. The advisory is available at tools.cisco.com. This vulnerability was named CVE-2021-1585 since 11/13/2020. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details are unknown but an exploit is available.

An exploit has been developed by Malcolm Lashley and been published immediately after the advisory. It is declared as proof-of-concept. It is possible to download the exploit at gist.github.com. The vulnerability was handled as a non-public zero-day exploit for at least 211 days. During that time the estimated underground price was around $5k-$25k.

Upgrading eliminates this vulnerability.

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CPE 2.3infoedit

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CVSSv3infoedit

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: 🔍

CVSSv2infoedit

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

Exploitinginfoedit

Class: Privilege escalation
CWE: CWE-94
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔒
Status: Proof-of-Concept
Author: Malcolm Lashley
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfoedit

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

Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒
Exploit Delay Time: 🔍

Upgrade: tools.cisco.com

Timelineinfoedit

11/13/2020 CVE assigned
12/10/2020 +27 days Vulnerability found
12/14/2020 +4 days Vendor informed
07/09/2021 +206 days Advisory disclosed
07/09/2021 +0 days Exploit disclosed
07/09/2021 +0 days VulDB entry created
07/11/2021 +2 days VulDB last update

Sourcesinfoedit

Vendor: https://www.cisco.com/

Advisory: cisco-sa-asdm-rce-gqjShXW
Status: Confirmed

CVE: CVE-2021-1585 (🔒)
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfoedit

Created: 07/09/2021 06:42 AM
Updated: 07/11/2021 09:17 AM
Changes: (1) source_cve_cna
Complete: 🔍
Committer: mlashley

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