PT-2020-5301 · D Link · D-Link Dsl-2640B

Cristofaro Mune · Published 2020-03-30 · Updated 2021-07-21 · CVE-2020-9278

Positive Technologies (AI Summary)

CVSS v2.0

9.4

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions D-Link DSL-2640B versions prior to EU 4.01B

Description The issue is related to insufficient input validation, allowing a remote attacker to reset the device's configuration by accessing an unauthenticated URL, such as "/api/v1/reset" or similar. This can lead to a loss of device settings and potentially expose the device to further attacks.

Recommendations For D-Link DSL-2640B version EU 4.01B and earlier, consider restricting access to unauthenticated URLs as a temporary workaround until a patch is available. Avoid using unauthenticated API endpoints, such as /api/v1/reset, until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Missing Authentication

RCE

Weakness Enumeration

CWE-306

CWE-20

Related Identifiers

BDU:2021-00063

CVE-2020-9278

Affected Products

D-Link Dsl-2640B

References · 11

• 🔥 https://raelize.com/posts/d-link-dsl-2640b-security-advisories · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2020-9278 · Security Note
• https://dlink.com/en/security-bulletin · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-9278 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-00063 · Security Note
• https://t.me/secharvester/8892 · Telegram Post
• https://t.me/malwr/2992 · Telegram Post
• https://t.me/rnetsec/11915 · Telegram Post
• https://raelize.com/advisories/CVE-2020-9278_D-Link-DSL-2640B_Unauthenticated-configuration-reset_v1.0.txt · Note
• https://cxsecurity.com/cveshow/CVE-2020-9278 · Note
• https://t.me/cvenotify/2951 · Telegram Post