CVE-2019-20215
CriticalPublic exploitD-Link DIR-859 1.05 and 1.06B01 Beta01 devices allow remote attackers to execute arbitrary OS commands via a urn: to the M-SEARCH method in ssdpcgi() in /htdocs/cgibin, because HTTP_ST is mishandled.
Published Jan 29, 2020 · Updated Nov 21, 2024
Key Facts
Patch immediately- CVE-2019-20215 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Dir-859 Firmware (Dlink).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 75% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
75%
Higher than 99.5% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
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Description
D-Link DIR-859 1.05 and 1.06B01 Beta01 devices allow remote attackers to execute arbitrary OS commands via a urn: to the M-SEARCH method in ssdpcgi() in /htdocs/cgibin, because HTTP_ST is mishandled. The value of the urn: service/device is checked with the strstr function, which allows an attacker to concatenate arbitrary commands separated by shell metacharacters.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Dir-859 FirmwareDlink | 1.05, 1.06b01-beta01 | n/a |
Timeline
Publicly disclosed
Jan 29, 2020
Last updated
Nov 21, 2024
Weakness Type
- CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
References
- patchhttps://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10147
- exploitMSF dlink_dir859_exec_ssdpcgi.rb
- exploitMSF dlink_upnp_msearch_exec.rb
- exploitExploitDB-48037
- otherhttp://packetstormsecurity.com/files/156250/D-Link-ssdpcgi-Unauthenticated-Remote-Command-Execution.html
FAQ
Common Questions.
D-Link DIR-859 1.05 and 1.06B01 Beta01 devices allow remote attackers to execute arbitrary OS commands via a urn: to the M-SEARCH method in ssdpcgi() in /htdocs/cgibin, because HTTP_ST is mishandled.
Affected: Dir-859 Firmware (Dlink) versions 1.05, 1.06b01-beta01. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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