CVE-2021-34709
Cisco IOS XR Software for Cisco 8000 and Network Convergence System 540 Series Routers Image Verification Vulnerabilities
Severity Score
6.4
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
Track*
*SSVC
Descriptions
Multiple vulnerabilities in image verification checks of Cisco Network Convergence System (NCS) 540 Series Routers, only when running Cisco IOS XR NCS540L software images, and Cisco IOS XR Software for Cisco 8000 Series Routers could allow an authenticated, local attacker to execute arbitrary code on the underlying operating system. For more information about these vulnerabilities, see the Details section of this advisory.
Múltiples vulnerabilidades en las comprobaciones de verificación de imágenes de los routers Cisco Network Convergence System (NCS) de la serie 540, sólo cuando se ejecutan imágenes de software Cisco IOS XR NCS540L, y el software Cisco IOS XR para los routers Cisco de la serie 8000 podrían permitir a un atacante local autenticado ejecutar código arbitrario en el sistema operativo subyacente. Para conseguir más información sobre estas vulnerabilidades, consulte la sección Details de este aviso
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
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:Track*
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2021-06-15 CVE Reserved
- 2021-09-09 CVE Published
- 2023-03-08 EPSS Updated
- 2024-11-07 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-347: Improper Verification of Cryptographic Signature
CAPEC
References (1)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-lnt-QN9mCzwn | 2023-11-07 |
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 Xr Search vendor "Cisco" for product "Ios Xr" | < 7.3.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.3.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | 8101-32fh Search vendor "Cisco" for product "8101-32fh" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.3.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.3.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | 8101-32h Search vendor "Cisco" for product "8101-32h" | * | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.3.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.3.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | 8102-64h Search vendor "Cisco" for product "8102-64h" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.3.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.3.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | 8201 Search vendor "Cisco" for product "8201" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.3.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.3.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | 8201-32fh Search vendor "Cisco" for product "8201-32fh" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.3.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.3.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | 8202 Search vendor "Cisco" for product "8202" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.3.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.3.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | 8800 12-slot Search vendor "Cisco" for product "8800 12-slot" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.3.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.3.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | 8800 18-slot Search vendor "Cisco" for product "8800 18-slot" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.3.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.3.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | 8800 4-slot Search vendor "Cisco" for product "8800 4-slot" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.3.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.3.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | 8800 8-slot Search vendor "Cisco" for product "8800 8-slot" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.3.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.3.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | N540-12z20g-sys-a Search vendor "Cisco" for product "N540-12z20g-sys-a" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.3.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.3.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | N540-12z20g-sys-d Search vendor "Cisco" for product "N540-12z20g-sys-d" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.3.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.3.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | N540-24z8q2c-m Search vendor "Cisco" for product "N540-24z8q2c-m" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.3.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.3.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | N540-24z8q2c-sys Search vendor "Cisco" for product "N540-24z8q2c-sys" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.3.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.3.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | N540-28z4c-sys-a Search vendor "Cisco" for product "N540-28z4c-sys-a" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.3.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.3.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | N540-28z4c-sys-d Search vendor "Cisco" for product "N540-28z4c-sys-d" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.3.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.3.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | N540-acc-sys Search vendor "Cisco" for product "N540-acc-sys" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.3.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.3.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | N540x-12z16g-sys-a Search vendor "Cisco" for product "N540x-12z16g-sys-a" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.3.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.3.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | N540x-12z16g-sys-d Search vendor "Cisco" for product "N540x-12z16g-sys-d" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.3.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.3.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | N540x-16z4g8q2c-a Search vendor "Cisco" for product "N540x-16z4g8q2c-a" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.3.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.3.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | N540x-16z4g8q2c-d Search vendor "Cisco" for product "N540x-16z4g8q2c-d" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.3.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.3.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | N540x-acc-sys Search vendor "Cisco" for product "N540x-acc-sys" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | >= 7.4.0 < 7.4.1 Search vendor "Cisco" for product "Ios Xr" and version " >= 7.4.0 < 7.4.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | N540-12z20g-sys-a Search vendor "Cisco" for product "N540-12z20g-sys-a" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | >= 7.4.0 < 7.4.1 Search vendor "Cisco" for product "Ios Xr" and version " >= 7.4.0 < 7.4.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | N540-12z20g-sys-d Search vendor "Cisco" for product "N540-12z20g-sys-d" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | >= 7.4.0 < 7.4.1 Search vendor "Cisco" for product "Ios Xr" and version " >= 7.4.0 < 7.4.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | N540-24z8q2c-m Search vendor "Cisco" for product "N540-24z8q2c-m" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | >= 7.4.0 < 7.4.1 Search vendor "Cisco" for product "Ios Xr" and version " >= 7.4.0 < 7.4.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | N540-24z8q2c-sys Search vendor "Cisco" for product "N540-24z8q2c-sys" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | >= 7.4.0 < 7.4.1 Search vendor "Cisco" for product "Ios Xr" and version " >= 7.4.0 < 7.4.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | N540-28z4c-sys-a Search vendor "Cisco" for product "N540-28z4c-sys-a" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | >= 7.4.0 < 7.4.1 Search vendor "Cisco" for product "Ios Xr" and version " >= 7.4.0 < 7.4.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | N540-28z4c-sys-d Search vendor "Cisco" for product "N540-28z4c-sys-d" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | >= 7.4.0 < 7.4.1 Search vendor "Cisco" for product "Ios Xr" and version " >= 7.4.0 < 7.4.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | N540-acc-sys Search vendor "Cisco" for product "N540-acc-sys" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | >= 7.4.0 < 7.4.1 Search vendor "Cisco" for product "Ios Xr" and version " >= 7.4.0 < 7.4.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | N540x-12z16g-sys-a Search vendor "Cisco" for product "N540x-12z16g-sys-a" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | >= 7.4.0 < 7.4.1 Search vendor "Cisco" for product "Ios Xr" and version " >= 7.4.0 < 7.4.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | N540x-12z16g-sys-d Search vendor "Cisco" for product "N540x-12z16g-sys-d" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | >= 7.4.0 < 7.4.1 Search vendor "Cisco" for product "Ios Xr" and version " >= 7.4.0 < 7.4.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | N540x-16z4g8q2c-a Search vendor "Cisco" for product "N540x-16z4g8q2c-a" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | >= 7.4.0 < 7.4.1 Search vendor "Cisco" for product "Ios Xr" and version " >= 7.4.0 < 7.4.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | N540x-16z4g8q2c-d Search vendor "Cisco" for product "N540x-16z4g8q2c-d" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | >= 7.4.0 < 7.4.1 Search vendor "Cisco" for product "Ios Xr" and version " >= 7.4.0 < 7.4.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | N540x-acc-sys Search vendor "Cisco" for product "N540x-acc-sys" | - | - |
Safe
|