Cisco IOS XE SD-WAN Software Buffer Overflow Vulnerability
A vulnerability in the vDaemon process in Cisco IOS XE SD-WAN Software could allow an unauthenticated, remote attacker to cause a buffer overflow on an affected device. This vulnerability is due to insufficient bounds checking when an affected device processes traffic. An attacker could exploit this vulnerability by sending crafted traffic to the device. A successful exploit could allow the attacker to cause a buffer overflow and possibly execute arbitrary commands with root-level privileges, or cause the device to reload, which could result in a denial of service condition. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is part of the September 2021 release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: September 2021 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication. ["https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74581"]
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2021-34727US | critical9.8 | — | ||
A vulnerability in the vDaemon process in Cisco IOS XE SD-WAN Software could allow an unauthenticated, remote attacker to cause a buffer overflow on an affected device. This vulner… | ||||
references
External citations — patches, advisories, analysis.
- Cisco IOS XE SD-WAN Software Buffer Overflow Vulnerabilityself
- Cisco Security Vulnerability Policyexternal
- considering software upgradesexternal
- Cisco Software Checkerexternal
- Cisco Event Response: September 2021 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publicationexternal
- https://www.cisco.com/c/en/us/products/end-user-license-agreement.htmlexternal
- https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.htmlexternal
- Install and Upgrade Cisco IOS XE Release 17.2.1r and Laterexternal
remediations (30)
- FixedCisco IOS XE Catalyst SD-WAN 16.12.1b when installed on Cisco 1000 Series Integrated Services Routers
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco IOS XE Catalyst SD-WAN 16.12.1b when installed on Cisco 4000 Series Integrated Services Routers
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco IOS XE Catalyst SD-WAN 16.12.1b when installed on Cisco ASR 1000 Series Aggregation Services Routers
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco IOS XE Catalyst SD-WAN 16.12.1b when installed on Cisco Catalyst IR1100 Rugged Series Routers
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco IOS XE Catalyst SD-WAN 16.12.1b when installed on Cisco Cloud Services Router 1000V Series
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco IOS XE Catalyst SD-WAN 16.12.1b when installed on Cisco Integrated Services Virtual Router
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco IOS XE Catalyst SD-WAN 16.12.1d when installed on Cisco 1000 Series Integrated Services Routers
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco IOS XE Catalyst SD-WAN 16.12.1d when installed on Cisco 4000 Series Integrated Services Routers
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco IOS XE Catalyst SD-WAN 16.12.1d when installed on Cisco ASR 1000 Series Aggregation Services Routers
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco IOS XE Catalyst SD-WAN 16.12.1d when installed on Cisco Catalyst IR1100 Rugged Series Routers
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco IOS XE Catalyst SD-WAN 16.12.1d when installed on Cisco Cloud Services Router 1000V Series
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco IOS XE Catalyst SD-WAN 16.12.1d when installed on Cisco Integrated Services Virtual Router
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco IOS XE Catalyst SD-WAN 16.12.1e when installed on Cisco 1000 Series Integrated Services Routers
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco IOS XE Catalyst SD-WAN 16.12.1e when installed on Cisco 4000 Series Integrated Services Routers
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco IOS XE Catalyst SD-WAN 16.12.1e when installed on Cisco ASR 1000 Series Aggregation Services Routers
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco IOS XE Catalyst SD-WAN 16.12.1e when installed on Cisco Catalyst IR1100 Rugged Series Routers
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco IOS XE Catalyst SD-WAN 16.12.1e when installed on Cisco Cloud Services Router 1000V Series
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco IOS XE Catalyst SD-WAN 16.12.1e when installed on Cisco Integrated Services Virtual Router
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco IOS XE Catalyst SD-WAN 16.12.2r when installed on Cisco 1000 Series Integrated Services Routers
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco IOS XE Catalyst SD-WAN 16.12.2r when installed on Cisco 4000 Series Integrated Services Routers
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco IOS XE Catalyst SD-WAN 16.12.2r when installed on Cisco ASR 1000 Series Aggregation Services Routers
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco IOS XE Catalyst SD-WAN 16.12.2r when installed on Cisco Catalyst IR1100 Rugged Series Routers
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco IOS XE Catalyst SD-WAN 16.12.2r when installed on Cisco Cloud Services Router 1000V Series
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco IOS XE Catalyst SD-WAN 16.12.2r when installed on Cisco Integrated Services Virtual Router
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco IOS XE Catalyst SD-WAN 16.12.3 when installed on Cisco 1000 Series Integrated Services Routers
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco IOS XE Catalyst SD-WAN 16.12.3 when installed on Cisco 4000 Series Integrated Services Routers
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco IOS XE Catalyst SD-WAN 16.12.3 when installed on Cisco ASR 1000 Series Aggregation Services Routers
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco IOS XE Catalyst SD-WAN 16.12.3 when installed on Cisco Catalyst IR1100 Rugged Series Routers
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco IOS XE Catalyst SD-WAN 16.12.3 when installed on Cisco Cloud Services Router 1000V Series
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco IOS XE Catalyst SD-WAN 16.12.3 when installed on Cisco Integrated Services Virtual Router
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
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