PT-2022-27156 · Totolink · Totolink Lr350

Published 2022-11-23 · Updated 2025-04-25 · CVE-2022-44257

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions TOTOLINK LR350 version 9.3.5u.6369 B20220309

Description The issue is a post-authentication buffer overflow that occurs via the pppoeUser parameter in the setOpModeCfg function. This allows for potential exploitation after authentication has been completed.

Recommendations For TOTOLINK LR350 version 9.3.5u.6369 B20220309, consider disabling the setOpModeCfg function or restricting access to the pppoeUser parameter until a patch is available. Avoid using the pppoeUser parameter in the affected function to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2022-44257

Affected Products

Totolink Lr350

References · 6

• 🔥 https://brief-nymphea-813.notion.site/LR350-bof-setOpModeCfg-9dc3504e403f445b85d5db09176ac406 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2022-44257 · Security Note
• https://osv.dev/vulnerability/CVE-2022-44257 · Vendor Advisory
• https://t.me/cvenotify/119864 · Telegram Post
• https://t.me/cvenotify/38330 · Telegram Post
• https://t.me/cibsecurity/53435 · Telegram Post