Vulnerability Name:

CVE-2021-29302 (CCN-199752)

Assigned:2021-04-09
Published:2021-04-09
Updated:2021-04-21
Summary:TP-Link TL-WR802N(US), Archer_C50v5_US v4_200 <= 2020.06 contains a buffer overflow vulnerability in the httpd process in the body message. The attack vector is: The attacker can get shell of the router by sending a message through the network, which may lead to remote code execution.
CVSS v3 Severity:8.1 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)
7.3 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
9.8 Critical (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.8 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:9.3 High (CVSS v2 Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
10.0 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-120
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2021-29302

Source: XF
Type: UNKNOWN
tplink-cve202129302-bo(199752)

Source: CCN
Type: GitHub Web site
Buffer 0verflow in TP-Link Devices

Source: MISC
Type: Exploit, Third Party Advisory
https://github.com/liyansong2018/CVE/tree/main/2021/CVE-2021-29302

Source: MISC
Type: Vendor Advisory
https://static.tp-link.com/beta/2021/202103/20210319/TL-WR802Nv4_US_0.9.1_3.17_up_boot[210317-rel64474].zip

Source: CCN
Type: TP-Link Web site
TP-Link TL-WR802N(US) and Archer_C50v5_US devices

Source: MISC
Type: Vendor Advisory
https://www.tp-link.com/us/support/download/tl-wr802n/#Firmware

Vulnerable Configuration:Configuration 1:
  • cpe:/o:tp-link:tl-wr802n_firmware:*:*:*:*:*:*:*:* (Version <= 2020.06)
  • AND
  • cpe:/h:tp-link:tl-wr802n:v4:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    tp-link tl-wr802n firmware *
    tp-link tl-wr802n v4