Multiple Critical Flaws in Cisco Security Manager Let Attackers to Execute Remote Code

Cisco, this week, published an advisory, CVE-2020-27130, stating that a vulnerability was identified and resolved in Cisco Security Manager that could allow an unauthenticated, remote attacker to gain access to sensitive information.

The vulnerability is severe and has been scored 9.1 on the Common Vulnerability Scoring System (CVSS).

Affected products and versions

This vulnerability affects Cisco Security Manager releases 4.21 and earlier.

Vulnerability

Cisco Security Manager is an enterprise solution that helps organizations scale efficiently and manage a wide range of Cisco security devices.

The advisory states that an attacker could exploit this vulnerability by sending a crafted request to this affected device and that a successfully exploited device would allow access to the attacker to download arbitrary files.

Fix proposed

Considering the high severity of the vulnerability, Cisco has already released a fix for this vulnerability and customers may download and install the fix for their relevant version of the product, as there was no workaround for the vulnerability.

The advisory also states that the Cisco Product Security Incident Response Team (PSIRT) is not aware of any malicious use of the vulnerability till date, which indicates that this vulnerability is more a Proof of Concept (PoC) than a real world threat.

Cisco has credited Florian Hauser with the discovery of this vulnerability.

Hauser on his twitter handle said that he had reported the flaw 120 days back but “Cisco PSIRT had become unresponsive” and that the updated release does not have any mention of these vulnerabilities, and he has also for the benefit of all consolidated the PoCs in one Github page which can be accessed from the below tweet.

In a follow-up tweet, Hauser reported that he had a call with the Cisco team and that the vulnerabilities were indeed fixed but need further testing.

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