CVE-2023-31742
Published: 22 May 2023
Summary
CVE-2023-31742 is a high-severity Command Injection (CWE-77) vulnerability in Linksys Wrt54Gl Firmware. Its CVSS base score is 7.2 (High).
Operationally, ranked in the top 1.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
CVE-2023-31742 is a command injection vulnerability affecting the Linksys WRT54GL router running firmware version 4.30.18.006. The flaw resides in the httpd Start_EPI() function and can be triggered through the post request parameters wl_ant, wl_rate, WL_atten_ctl, ttcp_num, and ttcp_size, allowing an authenticated administrator to execute arbitrary operating-system commands.
An attacker who has already obtained web-management credentials can supply crafted values in these parameters to achieve remote shell access on the device. The vulnerability carries a CVSS 3.1 score of 7.2 and is classified under CWE-77.
Public references consist of the vendor site and a detailed proof-of-concept report hosted on GitHub; neither source describes an official patch or mitigation steps. The associated EPSS score has remained steady at 0.7381 with no material increase after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-36033
Vulnerability details
There is a command injection vulnerability in the Linksys WRT54GL router with firmware version 4.30.18.006. If an attacker gains web management privileges, they can inject commands into the post request parameters wl_ant, wl_rate, WL_atten_ctl, ttcp_num, ttcp_size in the httpd s…
more
Start_EPI() function, thereby gaining shell privileges.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.