TP-LINK AC1750 A7 190726 DNS Response stack-based overflow

Summaryinfo

A vulnerability labeled as critical has been found in TP-LINK AC1750 A7 190726. Affected by this issue is some unknown functionality. The manipulation as part of DNS Response results in stack-based overflow. This vulnerability is cataloged as CVE-2020-10881. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as very critical, was found in TP-LINK AC1750 A7 190726 (Router Operating System). Affected is an unknown part. The manipulation as part of a DNS Response leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

This vulnerability allows remote attackers to execute arbitrary code on affected installations of TP-Link Archer A7 Firmware Ver: 190726 AC1750 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 the root user. Was ZDI-CAN-9660.

The weakness was shared 03/25/2020. This vulnerability is traded as CVE-2020-10881 since 03/24/2020. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 03/26/2020).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entries VDB-152278, VDB-152277, VDB-152276 and VDB-152275 are related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Router Operating System

Vendor

• TP-LINK

Name

• AC1750

Version

• A7 190726

License

• commercial

Website

• Vendor: https://www.tp-link.com/

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion