This security advisory describes one medium risk vulnerability.
CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C] [PCI]
CWE-125 - Out-of-bounds Read
Exploit availability: NoDescription
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in the Multiprotocol Label Switching (MPLS) packet handling function. A remote attacker can send a specially crafted MPLS packet, trigger out-of-bounds read error and read contents of memory on the system.Mitigation
Install updates from vendor's website.Vulnerable software versions
Cisco SD-WAN: 18.4.0, 19.2.0, 20.3.0, 20.4.0, 20.5CPE
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to trick the victim to open a a specially crafted file.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.