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CVE-2022-43970

HIGHCVSS 7.2/10EPSS 19.30%

Last modified

CVE-2022-43970 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. A buffer overflow vulnerability exists in Linksys WRT54GL Wireless-G Broadband Router with firmware <= 4.30.18.006. A stack-based buffer overflow in the Start_EPI function within the httpd binary allows an authenticated attacker with administrator privileges to execute arbitrary commands on the underlying Linux operating system as root. EPSS estimates a 19.30% chance of exploitation in the next 30 days.

Description

A buffer overflow vulnerability exists in Linksys WRT54GL Wireless-G Broadband Router with firmware <= 4.30.18.006. A stack-based buffer overflow in the Start_EPI function within the httpd binary allows an authenticated attacker with administrator privileges to execute arbitrary commands on the underlying Linux operating system as root. This vulnerablity can be triggered over the network via a malicious POST request to /apply.cgi.

Metrics

CVSS 3.1
7.2/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
19.30%

97.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
LinksysWrt54gl Firmware<= 4.30.18.006

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2022-43970?
A buffer overflow vulnerability exists in Linksys WRT54GL Wireless-G Broadband Router with firmware <= 4.30.18.006. A stack-based buffer overflow in the Start_EPI function within the httpd binary allows an authenticated attacker with administrator privileges to execute arbitrary commands on the underlying Linux operating system as root. This vulnerablity can be triggered over the network via a malicious POST request to /apply.cgi.
How severe is CVE-2022-43970?
CVE-2022-43970 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 19.30% probability of exploitation in the next 30 days.
How do I fix CVE-2022-43970?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-43970?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST