Out-of-bounds read in Cisco SD-WAN - CVE-2021-1614
Published: July 22, 2021
Vulnerability identifier: #VU55240
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-1614
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Cisco SD-WAN
How to mitigate CVE-2021-1614
Install updates from vendor's website.
Cisco SD-WAN - addressed in versions 18.4.6, 19.2.3, 20.3.2, 20.4.1, 20.5.1