CVE-2020-14993: Buffer Overflow
First published: Tue Jun 23 2020(Updated: )
A stack-based buffer overflow on DrayTek Vigor2960, Vigor3900, and Vigor300B devices before 1.5.1.1 allows remote attackers to execute arbitrary code via the formuserphonenumber parameter in an authusersms action to mainfunction.cgi.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Draytek Vigor300b Firmware | <1.5.1.1 | |
| Draytek Vigor300b | ||
| Draytek Vigor2960 Firmware | <1.5.1.1 | |
| DrayTek Vigor2960 | ||
| Draytek Vigor3900 Firmware | <1.5.1.1 | |
| DrayTek Vigor3900 |
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Reference Links
- https://github.com/dexterone/Vigor-poc
- https://www.draytek.com/about/security-advisory
- https://www.draytek.com/about/security-advisory/vigor3900-/-vigor2960-/-vigor300b-stack-based-buffer-overflow-vulnerability-(cve-2020-14473)
- https://www.draytek.com/about/security-advisory/vigor3900-/-vigor2960-/-vigor300b-stack-based-buffer-overflow-vulnerability-%28cve-2020-14473%29
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2020-14993.
What is the severity of CVE-2020-14993?
The severity of CVE-2020-14993 is critical with a CVSS score of 9.8.
Which devices are affected by CVE-2020-14993?
DrayTek Vigor2960, Vigor3900, and Vigor300B devices before version 1.5.1.1 are affected by CVE-2020-14993.
How can remote attackers exploit CVE-2020-14993?
Remote attackers can exploit CVE-2020-14993 by sending a malicious formuserphonenumber parameter in an authusersms action to mainfunction.cgi.
Are DrayTek Vigor3900 and Vigor2960 devices vulnerable to CVE-2020-14993?
No, DrayTek Vigor3900 and Vigor2960 devices are not vulnerable to CVE-2020-14993.
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- agent/first-publish-date
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- collector/nvd-index
- agent/software-canonical-lookup-request
- agent/severity
- agent/weakness
- agent/author
- agent/remedy
- agent/softwarecombine
- agent/tags
- agent/description
- agent/event
- agent/references
- collector/mitre-cve
- source/MITRE
- vendor/draytek
- canonical/draytek vigor300b firmware
- canonical/draytek vigor300b
- canonical/draytek vigor2960 firmware
- canonical/draytek vigor2960
- canonical/draytek vigor3900 firmware
- canonical/draytek vigor3900