CVE-2021-1614: Cisco SD-WAN Software Information Disclosure Vulnerability
First published: Thu Jul 22 2021(Updated: )
A vulnerability in the Multiprotocol Label Switching (MPLS) packet handling function of Cisco SD-WAN Software could allow an unauthenticated, remote attacker to gain access to information stored in MPLS buffer memory. This vulnerability is due to insufficient handling of malformed MPLS packets that are processed by a device that is running Cisco SD-WAN Software. An attacker could exploit this vulnerability by sending a crafted MPLS packet to an affected device that is running Cisco SD-WAN Software or Cisco SD-WAN vManage Software. A successful exploit could allow the attacker to gain unauthorized access to sensitive information.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco SD-WAN | >=18.4.0<18.4.6 | |
| Cisco SD-WAN | >=19.2.0<19.2.3 | |
| Cisco SD-WAN | >=20.3<20.3.2 | |
| Cisco SD-WAN | >=20.4<20.4.1 | |
| Cisco SD-WAN | >=20.5<20.5.1 |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID for this Cisco SD-WAN software vulnerability?
The vulnerability ID for this Cisco SD-WAN software vulnerability is CVE-2021-1614.
What is the severity of CVE-2021-1614?
The severity of CVE-2021-1614 is medium (5.3).
How does this vulnerability in Cisco SD-WAN software occur?
This vulnerability occurs due to insufficient handling of malformed MPLS packets in the Multiprotocol Label Switching (MPLS) packet handling function of Cisco SD-WAN Software.
What is the affected software version for this vulnerability?
The affected software versions for this vulnerability are Cisco SD-WAN versions 18.4.0 to 18.4.6, 19.2.0 to 19.2.3, 20.3 to 20.3.2, 20.4 to 20.4.1, and 20.5 to 20.5.1.
How can an attacker exploit this vulnerability?
An unauthenticated remote attacker can exploit this vulnerability to gain access to information stored in MPLS buffer memory.
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- vendor/cisco
- canonical/cisco sd-wan
- version/cisco sd-wan/18.4.0
- version/cisco sd-wan/19.2.0
- version/cisco sd-wan/20.3
- version/cisco sd-wan/20.4
- version/cisco sd-wan/20.5