PT-2022-2267 · Tp Link · Tp-Link Wr-886N

Published 2022-03-09 · Updated 2022-03-12 · CVE-2021-44632

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions TP-LINK WR-886N version 20190826 2.3.8

Description A Buffer Overflow issue exists in the /cloud config/router post/upgrade info feature, allowing malicious users to execute arbitrary code on the system via a crafted post request. This is caused by a stack-based buffer overflow in the upgrade info function of the router's firmware. Exploitation of this issue may allow a remote attacker to execute arbitrary code using a specially formed request.

Recommendations For TP-LINK WR-886N version 20190826 2.3.8, as a temporary workaround, consider disabling the /cloud config/router post/upgrade info feature until a patch is available. Restrict access to this feature to minimize the risk of exploitation. Avoid using the upgrade info feature in the affected API endpoint until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

BDU:2022-02376

CVE-2021-44632

Affected Products

Tp-Link Wr-886N

References · 6

• 🔥❌ https://github.com/Yu3H0/IoT_CVE/tree/main/886N/upgradeInfoRegister · Exploit, Deleted
• https://bdu.fstec.ru/vul/2022-02376 · Security Note
• https://osv.dev/vulnerability/CVE-2021-44632 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-44632 · Security Note
• https://t.me/cibsecurity/38728 · Telegram Post
• https://vuldb.com/ru/?id.194666 · Note