Stack-Based Buffer Overflow in Draytek Vigor Devices
CVE-2020-10825

9.8CRITICAL

Key Information:

Vendor
Draytek
Status
Vigor300b Firmware
Vendor
CVE Published:
26 March 2020

Summary

A stack-based buffer overflow vulnerability exists in the /cgi-bin/activate.cgi component of Draytek Vigor3900, Vigor2960, and Vigor300B devices. This issue arises when handling the 'ticket' parameter during base64 decoding. Attackers can exploit this vulnerability by sending crafted HTTP requests to trigger the overflow, which may lead to unauthorized code execution on the targeted devices.

References

https://slashd.ga/2020/03/draytek-vulnerabilities/
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https://www.draytek.com/about/security-advisory/vigor3900...
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CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.