Vulnerability · Published Sep 4, 2024 · Assigned by VulDB

CVE-2024-8408Linksys WRT54G POST Parameter apply.cgi validate_services_port stack-based overflow

Medium 6.3

In plain English

A medium-severity stack buffer overflow in WRT54G from Linksys. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 55% of all known vulnerabilities).

Severity (CVSS 3.1)6.3Medium

Exploit odds (30 days)0.8%top 44.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was found in Linksys WRT54G 4.21.5. It has been rated as critical. Affected by this issue is the function validate_services_port of the file /apply.cgi of the component POST Parameter Handler. The manipulation of the argument services_array leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products (as reported)

Vendor	Product	Versions
Linksys	WRT54G	4.21.5

Weakness: CWE-121 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

References

VDB-276488 | Linksys WRT54G POST Parameter apply.cgi validate_services_port stack-based overflow vdb-entry, technical-description
VDB-276488 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #398567 | Linksys WRT54G v4.21.5 Command Injection third-party-advisory
https://github.com/BuaaIOTTeam/Iot_Linksys/blob/main/Linksys_WRT54G_validate_services_port.md exploit
https://www.linksys.com/ product