PT-2019-1617 · D Link · D-Link Dir-878

Published 2019-02-12 · Updated 2021-04-23 · CVE-2019-8313

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 DIR-878 version 1.12A1

Description The issue is related to insufficient input validation in the SetIPv6FirewallSettings() API function, allowing a remote attacker to execute arbitrary code. This can be achieved through a Command Injection vulnerability, where an attacker can execute arbitrary OS commands via a crafted /HNAP1 POST request. Specifically, the vulnerability occurs when the twsystem function is called with untrusted input from the request body, such as shell metacharacters in the SrcIPv6AddressRangeStart field.

Recommendations For D-Link DIR-878 version 1.12A1, consider disabling the SetIPv6FirewallSettings() API function until a patch is available to prevent exploitation. Restrict access to the /HNAP1 API endpoint to minimize the risk of arbitrary code execution. Avoid using the SrcIPv6AddressRangeStart field in the affected API endpoint until the issue is resolved.

Exploit

Fix

OS Command Injection

Command Injection

Weakness Enumeration

CWE-78

CWE-77

Related Identifiers

BDU:2019-01164

CVE-2019-8313

Affected Products

D-Link Dir-878

References · 4

• 🔥❌ https://github.com/lieanu/vuls/blob/master/dlink/DIR-878/firewallv6.md · Exploit, Deleted
• https://bdu.fstec.ru/vul/2019-01164 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2019-8313 · Security Note
• https://osv.dev/vulnerability/CVE-2019-8313 · Vendor Advisory