PT-2024-3255 · Tenda · Tenda I21

Yhryhryhr_Miemie · Published 2024-04-27 · Updated 2024-06-04 · CVE-2024-4491

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Tenda i21 version 1.0.0.14(4656)

Description A critical vulnerability was found in the function formGetDiagnoseInfo of the Tenda i21 software. The manipulation of the argument cmdinput leads to a stack-based buffer overflow. This issue can be exploited remotely, potentially affecting the confidentiality, integrity, and availability of protected information. The exploit has been disclosed to the public and may be used. The vendor was contacted about this disclosure but did not respond.

Recommendations As a temporary workaround, consider disabling the formGetDiagnoseInfo function until a patch is available. Restrict access to the cmdinput argument to minimize the risk of exploitation. Avoid using the cmdinput argument in the affected function until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Corruption

Stack Overflow

Weakness Enumeration

CWE-787

CWE-121

Related Identifiers

BDU:2024-03486

CVE-2024-4491

Affected Products

Tenda I21

References · 11

• 🔥 https://github.com/abcdefg-png/IoT-vulnerable/blob/main/Tenda/i/i21/formGetDiagnoseInfo.md · Exploit
• https://bdu.fstec.ru/vul/2024-03486 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2024-4491 · Security Note
• https://osv.dev/vulnerability/CVE-2024-4491 · Vendor Advisory
• https://twitter.com/CVEnew/status/1787139428273525217 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1786996465211973845 · Twitter Post
• https://t.me/cvenotify/79120 · Telegram Post
• https://vuldb.com/?submit.323600 · Note
• https://vuldb.com/?id.263080 · Note
• https://twitter.com/linuxpatch/status/1786925142372647132 · Twitter Post
• https://vuldb.com/?ctiid.263080 · Note