Path Traversal Vulnerability in D-Link DIR-2640 Router
CVE-2021-20134

8.4HIGH

Key Information:

Vendor

D-Link
Status
Quagga Services On D-link Dir-2640 Routers
Vendor
CVE Published:
30 December 2021

What is CVE-2021-20134?

The D-Link DIR-2640 router, specifically versions 1.11B02 and earlier, is susceptible to a path traversal vulnerability linked to Quagga Services. This vulnerability enables an authenticated remote attacker to manipulate log files on the device's filesystem. By setting an arbitrary file as the log for either the zebra or ripd services, attackers can inject malicious content, potentially leading to remote code execution. Once the malicious payload is appended, it may allow attackers to escalate privileges and obtain a root shell on the device, presenting a serious security risk.

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Affected Version(s)

Quagga Services on D-Link DIR-2640 Routers <= 1.11B02

References

https://www.tenable.com/security/research/tra-2021-44
x_refsource_MISC

CVSS V3.1

Score:
8.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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