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Vulnerability Intelligence

CVE-2019-20215

CriticalPublic exploit

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.

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
ProductAffected versionsFixed in
Dir-859 FirmwareDlink1.05, 1.06b01-beta01n/a

Timeline

  1. Publicly disclosed

    Jan 29, 2020

  2. Last updated

    Nov 21, 2024

Weakness Type

  • CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

References

1 more references in the full CVE brief

FAQ

Common Questions.

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