CVE-2021-34727
Cisco IOS XE SD-WAN Software Buffer Overflow Vulnerability
Severity Score
9.8
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
Attend
*SSVC
Descriptions
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.
Una vulnerabilidad en el proceso vDaemon de Cisco IOS XE SD-WAN Software podría permitir a un atacante remoto no autenticado causar un desbordamiento del búfer en un dispositivo afectado. Esta vulnerabilidad es debido a una comprobación insuficiente de los límites cuando un dispositivo afectado procesa el tráfico. Un atacante podría explotar esta vulnerabilidad mediante el envío de tráfico diseñado al dispositivo. Una explotación con éxito podría permitir al atacante causar un desbordamiento del búfer y posiblemente ejecutar comandos arbitrarios con privilegios de nivel de root, o causar la recarga del dispositivo, que podría resultar en una condición de denegación de servicio
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:Attend
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2021-06-15 CVE Reserved
- 2021-09-23 CVE Published
- 2024-06-07 EPSS Updated
- 2024-11-07 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CAPEC
References (1)
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 1000 Integrated Services Router Search vendor "Cisco" for product "1000 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 1100-4g\/6g Integrated Services Router Search vendor "Cisco" for product "1100-4g\/6g Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 1100-4p Integrated Services Router Search vendor "Cisco" for product "1100-4p Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 1100-8p Integrated Services Router Search vendor "Cisco" for product "1100-8p Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 1100 Integrated Services Router Search vendor "Cisco" for product "1100 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 1101-4p Integrated Services Router Search vendor "Cisco" for product "1101-4p Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 1101 Integrated Services Router Search vendor "Cisco" for product "1101 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 1109-2p Integrated Services Router Search vendor "Cisco" for product "1109-2p Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 1109-4p Integrated Services Router Search vendor "Cisco" for product "1109-4p Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 1109 Integrated Services Router Search vendor "Cisco" for product "1109 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 1111x-8p Integrated Services Router Search vendor "Cisco" for product "1111x-8p Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 1111x Integrated Services Router Search vendor "Cisco" for product "1111x Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 111x Integrated Services Router Search vendor "Cisco" for product "111x Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 1120 Integrated Services Router Search vendor "Cisco" for product "1120 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 1160 Integrated Services Router Search vendor "Cisco" for product "1160 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 4000 Integrated Services Router Search vendor "Cisco" for product "4000 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 422 Integrated Services Router Search vendor "Cisco" for product "422 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 4221 Integrated Services Router Search vendor "Cisco" for product "4221 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 4321 Integrated Services Router Search vendor "Cisco" for product "4321 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 4331 Integrated Services Router Search vendor "Cisco" for product "4331 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 4351 Integrated Services Router Search vendor "Cisco" for product "4351 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 4431 Integrated Services Router Search vendor "Cisco" for product "4431 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 4451-x Integrated Services Router Search vendor "Cisco" for product "4451-x Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 4451 Integrated Services Router Search vendor "Cisco" for product "4451 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 4461 Integrated Services Router Search vendor "Cisco" for product "4461 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1000 Search vendor "Cisco" for product "Asr 1000" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1000-esp100 Search vendor "Cisco" for product "Asr 1000-esp100" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1000-x Search vendor "Cisco" for product "Asr 1000-x" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1000 Series Search vendor "Cisco" for product "Asr 1000 Series" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1000 Series Route Processor \(rp2\) Search vendor "Cisco" for product "Asr 1000 Series Route Processor \(rp2\)" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1000 Series Route Processor \(rp3\) Search vendor "Cisco" for product "Asr 1000 Series Route Processor \(rp3\)" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1001 Search vendor "Cisco" for product "Asr 1001" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1001-hx Search vendor "Cisco" for product "Asr 1001-hx" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1001-hx R Search vendor "Cisco" for product "Asr 1001-hx R" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1001-x Search vendor "Cisco" for product "Asr 1001-x" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1001-x R Search vendor "Cisco" for product "Asr 1001-x R" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1002 Search vendor "Cisco" for product "Asr 1002" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1002-hx Search vendor "Cisco" for product "Asr 1002-hx" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1002-hx R Search vendor "Cisco" for product "Asr 1002-hx R" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1002-x Search vendor "Cisco" for product "Asr 1002-x" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1002-x R Search vendor "Cisco" for product "Asr 1002-x R" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1004 Search vendor "Cisco" for product "Asr 1004" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1006 Search vendor "Cisco" for product "Asr 1006" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1006-x Search vendor "Cisco" for product "Asr 1006-x" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1009-x Search vendor "Cisco" for product "Asr 1009-x" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1013 Search vendor "Cisco" for product "Asr 1013" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1023 Search vendor "Cisco" for product "Asr 1023" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Sd-wan Search vendor "Cisco" for product "Ios Xe Sd-wan" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Csr 1000v Search vendor "Cisco" for product "Csr 1000v" | - | - |
Safe
|