CVE-2023-34644
Published: 31 July 2023
Summary
CVE-2023-34644 is a critical-severity Code Injection (CWE-94) vulnerability in Ruijie Rg-Ew1200R Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 6.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
CVE-2023-34644 is a remote code execution vulnerability affecting multiple Ruijie Networks products running specific firmware versions, including RG-EW series home routers and repeaters (EW_3.0(1)B11P204), RG-NBS and RG-S1930 series switches (SWITCH_3.0(1)B11P218), RG-EG series business VPN routers (EG_3.0(1)B11P216), EAP and RAP series wireless access points (AP_3.0(1)B11P218), and NBC series wireless controllers (AC_3.0(1)B11P86). The flaw, classified under CWE-94, permits unauthorized code injection through a crafted POST request to the /cgi-bin/luci/api/auth endpoint and carries a CVSS 3.1 score of 9.8.
Unauthenticated remote attackers can exploit the vulnerability over the network without any user interaction or credentials to obtain the highest privileges on the affected devices, enabling full control of the target system.
Vendor security bulletins addressing the issue are published by Ruijie Networks at https://www.ruijie.com.cn/gy/xw-aqtg-gw/91389/ and https://www.ruijienetworks.com/support/securityBulletins/cybersecurity_bulletins/10001. The EPSS score for this CVE has remained flat at a peak of 0.1109 with no material increase observed after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-38688
Vulnerability details
Remote code execution vulnerability in Ruijie Networks Product: RG-EW series home routers and repeaters EW_3.0(1)B11P204, RG-NBS and RG-S1930 series switches SWITCH_3.0(1)B11P218, RG-EG series business VPN routers EG_3.0(1)B11P216, EAP and RAP series wireless access points AP_3.0(1)B11P218, NBC series wireless controllers AC_3.0(1)B11P86…
more
allows unauthorized remote attackers to gain the highest privileges via crafted POST request to /cgi-bin/luci/api/auth.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Makes persistent code injection into loaded programs impossible when the executable image itself resides on hardware-protected read-only media.
Dynamically generated code can be produced and executed inside the isolated chamber, preventing host compromise from code-injection payloads.
Validates inputs used in dynamic code generation to block injected directives.
Directly prevents execution of attacker-supplied code written into data memory regions.