CVE-2021-35003: TP-Link Archer C90 DNS Response Stack-based Buffer Overflow Remote Code Execution Vulnerability
This vulnerability allows remote attackers to execute arbitrary code on affected installations of TP-Link Archer C90 1.0.6 Build 20200114 rel.73164(5553) routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of DNS responses. A crafted DNS message can trigger an overflow of a fixed-length, stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-14655.
Other sources
This vulnerability allows remote attackers to execute arbitrary code on affected installations of TP-Link Archer C90 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of DNS responses. A crafted DNS message can trigger an overflow of a fixed-length, stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2021-35003?
CVE-2021-35003 is considered a critical vulnerability as it allows remote code execution without authentication.
How do I fix CVE-2021-35003?
To fix CVE-2021-35003, update the TP-Link Archer C90 router firmware to the latest version provided by the vendor.
Who is affected by CVE-2021-35003?
CVE-2021-35003 affects installations of TP-Link Archer C90 routers running firmware version 1.0.6 Build 20200114.
What type of attack can exploit CVE-2021-35003?
CVE-2021-35003 can be exploited by remote attackers to execute arbitrary code on the affected router.
Does CVE-2021-35003 require authentication to exploit?
No, CVE-2021-35003 does not require authentication to be exploited, making it particularly dangerous.