CVE-2020-5138
First published: Mon Oct 12 2020(Updated: )
A Heap Overflow vulnerability in the SonicOS allows a remote unauthenticated attacker to cause Denial of Service (DoS) on the firewall SSLVPN service and leads to SonicOS crash. This vulnerability affected SonicOS Gen 5 version 5.9.1.7, 5.9.1.13, Gen 6 version 6.5.4.7, 6.5.1.12, 6.0.5.3, SonicOSv 6.5.4.v and Gen 7 version SonicOS 7.0.0.0.
Credit: PSIRT@sonicwall.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| SonicWall SonicOS | <=5.9.1.13 | |
| SonicWall SonicOS | >=6.0.0.0<=6.0.5.3 | |
| SonicWall SonicOS | >=6.5.0.0<=6.5.1.11 | |
| SonicWall SonicOS | >=6.5.4.0<=6.5.4.7 | |
| SonicWall SonicOS | =7.0.0.0 | |
| Sonicwall Sonicosv | <=6.5.4.4 |
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Frequently Asked Questions
What is CVE-2020-5138?
CVE-2020-5138 is a Heap Overflow vulnerability in the SonicOS, which allows a remote unauthenticated attacker to cause Denial of Service (DoS) on the firewall SSLVPN service and leads to SonicOS crash.
How does CVE-2020-5138 affect SonicOS?
CVE-2020-5138 affects SonicOS Gen 5 version 5.9.1.7, 5.9.1.13, Gen 6 version 6.5.4.7, 6.5.1.12, 6.0.5.3, and SonicOSv 6.
What is the severity of CVE-2020-5138?
CVE-2020-5138 has a severity rating of 7.5 (high).
How can an attacker exploit CVE-2020-5138?
An attacker can exploit CVE-2020-5138 by sending a specially crafted request to the SSLVPN service of the SonicOS firewall.
Is there a fix for CVE-2020-5138?
Yes, SonicWall has released patches to address the vulnerability. It is recommended to update to the latest version of SonicOS to mitigate the risk.
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- agent/softwarecombine
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- collector/mitre-cve
- source/MITRE
- vendor/sonicwall
- canonical/sonicwall sonicos
- version/sonicwall sonicos/5.9.1.13
- version/sonicwall sonicos/6.0.0.0
- version/sonicwall sonicos/6.0.5.3
- version/sonicwall sonicos/6.5.0.0
- version/sonicwall sonicos/6.5.1.11
- version/sonicwall sonicos/6.5.4.0
- version/sonicwall sonicos/6.5.4.7
- version/sonicwall sonicos/7.0.0.0
- canonical/sonicwall sonicosv
- version/sonicwall sonicosv/6.5.4.4