CVE-2021-1308— Cisco Small Business RV Series Routers Link Layer Discovery Protocol Vulnerabilities
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I. Basic Information for CVE-2021-1308
Vulnerability Information
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Vulnerability Title
Cisco Small Business RV Series Routers Link Layer Discovery Protocol Vulnerabilities
Source: NVD (National Vulnerability Database)
Vulnerability Description
Multiple vulnerabilities exist in the Link Layer Discovery Protocol (LLDP) implementation for Cisco Small Business RV Series Routers. An unauthenticated, adjacent attacker could execute arbitrary code or cause an affected router to leak system memory or reload. A memory leak or device reload would cause a denial of service (DoS) condition on an affected device. For more information about these vulnerabilities, see the Details section of this advisory. Note: LLDP is a Layer 2 protocol. To exploit these vulnerabilities, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
内存缓冲区边界内操作的限制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco Link Layer Discovery Protocol 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Link Layer Discovery Protocol是美国思科（Cisco）公司的一个路由器。 Cisco Link Layer Discovery Protocol 存在缓冲区错误漏洞，攻击者可利用该漏洞可以执行任意代码，或导致受影响的路由器泄漏系统内存或重新加载。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Cisco | Cisco Small Business RV Series Router Firmware | n/a | - |
II. Public POCs for CVE-2021-1308
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-multi-lldp-u7e4chCevendor-advisoryx_refsource_CISCO
- https://nvd.nist.gov/vuln/detail/CVE-2021-1308
Same Patch Batch · Cisco · 2021-04-08 · 29 CVEs total
| CVE-2021-1459 | 9.8 CRITICAL | Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote |
| CVE-2021-1362 | 8.8 HIGH | Cisco Unified Communications Products Remote Code Execution Vulnerability |
| CVE-2021-1137 | 7.8 HIGH | Cisco SD-WAN vManage Software Vulnerabilities |
| CVE-2021-1480 | 7.8 HIGH | Cisco SD-WAN vManage Software Vulnerabilities |
| CVE-2021-1479 | 7.8 HIGH | Cisco SD-WAN vManage Software Vulnerabilities |
| CVE-2021-1404 | 7.5 HIGH | Clam AntiVirus (ClamAV) Email Parser Denial of Service Vulnerability |
| CVE-2021-1405 | 7.5 HIGH | Clam AntiVirus (ClamAV) PDF Parser Denial of Service Vulnerability |
| CVE-2021-1252 | 7.5 HIGH | Clam AntiVirus (ClamAV) Excel XLM Parser Denial of Service Vulnerability |
| CVE-2021-1251 | 7.4 HIGH | Cisco Small Business RV Series Routers Link Layer Discovery Protocol Vulnerabilities |
| CVE-2021-1309 | 7.4 HIGH | Cisco Small Business RV Series Routers Link Layer Discovery Protocol Vulnerabilities |
| CVE-2021-1386 | 7.0 HIGH | Cisco Advanced Malware Protection for Endpoints Windows Connector, ClamAV for Windows, an |
| CVE-2021-1485 | 6.6 MEDIUM | Cisco IOS XR Software Command Injection Vulnerability |
| CVE-2021-1475 | 6.5 MEDIUM | Cisco Umbrella Link and CSV Formula Injection Vulnerabilities |
| CVE-2021-1474 | 6.5 MEDIUM | Cisco Umbrella Link and CSV Formula Injection Vulnerabilities |
| CVE-2021-1413 | 6.3 MEDIUM | Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers Authenticated Remote C |
| CVE-2021-1414 | 6.3 MEDIUM | Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers Authenticated Remote C |
| CVE-2021-1415 | 6.3 MEDIUM | Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers Authenticated Remote C |
| CVE-2021-1409 | 6.1 MEDIUM | Cisco Unified Communications Products Cross-Site Scripting Vulnerabilities |
| CVE-2021-1380 | 6.1 MEDIUM | Cisco Unified Communications Products Cross-Site Scripting Vulnerabilities |
| CVE-2021-1463 | 6.1 MEDIUM | Cisco Unified Intelligence Center Reflected Cross-Site Scripting Vulnerability |
Showing top 20 of 29 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Cisco Small Business RV Series Router Firmware
- CVE-2020-3431
Cisco Small Business RV Series Routers Cross-Site Scripting - CVE-2024-20524
Cisco Small Business RV042, RV042G, RV320, and RV325 Denial - CVE-2024-20523
Cisco Small Business RV042, RV042G, RV320, and RV325 Denial - CVE-2024-20522
Cisco Small Business RV042, RV042G, RV320, and RV325 Denial - CVE-2024-20521
Cisco Small Business RV042, RV042G, RV320, and RV325 Remote
Same vendor: Cisco
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Same weakness: CWE-119
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V. Comments for CVE-2021-1308
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