Cisco released security updates to address multiple flaws in Cisco SD-WAN products could allow an unauthenticated, remote attacker to execute attacks against vulnerable devices.
These vulnerabilities impact devices running the following Cisco SD-WAN Software:
The first issue, tracked as CVE-2021-1300, is a Cisco SD-WAN buffer overflow vulnerability that could be exploited by an unauthenticated, remote attacker to trigger a buffer overflow condition.
“A vulnerability in Cisco SD-WAN Software could allow an unauthenticated, remote attacker to cause a buffer overflow condition.” reads the security advisory. “A successful exploit could allow the attacker to execute arbitrary code on the underlying operating system with root privileges.”
The vulnerability stems from the incorrect handling of IP traffic. An attacker can trigger the flaw by sending crafted IP traffic through an affected device, which may cause a buffer overflow when the traffic is processed. The flaw has been rated with a CVSS Base Score of 9.8.
The IT giant said that there are no workarounds that address this vulnerability.
The second flaw addressed by the company is a Cisco SD-WAN buffer overflow vulnerability tracked as CVE-2021-1301.
A flaw resides in the NETCONF subsystem, an authenticated, remote attacker could exploit the vulnerability to trigger a denial of service (DoS) condition on an affected device or system.
The vulnerability is caused by the insufficient input validation of user-supplied input that is read by the system during the establishment of an SSH connection.
“An attacker could exploit this vulnerability by submitting a crafted file to be read by the affected system. A successful exploit could allow the attacker to cause a buffer overflow that could result in a DoS condition on the affected device or system.” states the advisory.
The flaw has been rated with a CVSS Base Score of 6.5, the company said that are no workarounds that address this vulnerability.
Cisco also addressed critical Command Injection vulnerabilities in Smart Software Manager Satellite Web UI.
The flaws, tracked as CVE-2021-1138, CVE-2021-1140, and CVE-2021-1142, affect Cisco Smart Software Manager Satellite releases 5.1.0 and earlier and have been fixed with the release of versions 6.3.0 and later.
“Multiple vulnerabilities in the web UI of Cisco Smart Software Manager Satellite could allow an unauthenticated, remote attacker to execute arbitrary commands on the underlying operating system.” reads the advisory.
The Cisco Product Security Incident Response Team (PSIRT) is not aware of public announcements or threat actors exploiting the above issues in attacks in the wild.
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(SecurityAffairs – hacking, Cisco)