PT-2020-5338 · D Link · Dsr-250N+8

Published 2020-08-11 · Updated 2021-07-21 · CVE-2020-25759

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions D-Link DSR-250 version 3.17 D-Link DSR-150 (affected versions not specified) D-Link DSR-150N (affected versions not specified) D-Link DSR-250N (affected versions not specified) D-Link DSR-500 (affected versions not specified) D-Link DSR-500N (affected versions not specified) D-Link DSR-500AC (affected versions not specified) D-Link DSR-1000 (affected versions not specified) D-Link DSR-1000N (affected versions not specified) D-Link DSR-1000AC (affected versions not specified)

Description The issue is related to the Unified Services Router web interface, where certain functionality could allow an authenticated attacker to execute arbitrary commands due to a lack of validation of inputs provided in multipart HTTP POST requests. This could potentially allow a remote attacker to elevate their privileges and execute arbitrary code.

Recommendations For D-Link DSR-250 version 3.17, consider disabling the vulnerable functionality in the Unified Services Router web interface until a patch is available. For D-Link DSR-150, DSR-150N, DSR-250N, DSR-500, DSR-500N, DSR-500AC, DSR-1000, DSR-1000N, DSR-1000AC, restrict access to the Unified Services Router web interface to minimize the risk of exploitation, as the affected versions are not specified. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

OS Command Injection

RCE

Weakness Enumeration

CWE-78

CWE-20

Related Identifiers

BDU:2021-00133

CVE-2020-25759

Affected Products

Dsr-1000

Dsr-1000Ac

Dsr-1000N

Dsr-150

Dsr-250

Dsr-250N

Dsr-500

Dsr-500Ac

Dsr-500N

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2020-25759 · Security Note
• https://dlink.com/en/security-bulletin · Vendor Advisory
• https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10195 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-25759 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-00133 · Security Note
• https://digitaldefense.com/news/zero-day-vuln-d-link-vpn-routers · Note
• https://t.me/cibsecurity/20876 · Telegram Post
• https://t.me/cvenotify/7226 · Telegram Post