CVE-2021-39521: Null Pointer Dereference
First published: Mon Sep 20 2021(Updated: )
An issue was discovered in libredwg through v0.10.1.3751. A NULL pointer dereference exists in the function bit_read_BB() located in bits.c. It allows an attacker to cause Denial of Service.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| GNU LibreDWG | <=0.10.1.3751 |
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Reference Links
Frequently Asked Questions
What is the vulnerability identifier for this issue in libredwg?
The vulnerability identifier for this issue in libredwg is CVE-2021-39521.
What is the severity of CVE-2021-39521?
The severity of CVE-2021-39521 is medium with a CVSS score of 6.5.
How does CVE-2021-39521 manifest?
CVE-2021-39521 manifests as a NULL pointer dereference in the function bit_read_BB() located in bits.c.
Which software versions are affected by CVE-2021-39521?
GNU LibreDWG versions up to and including 0.10.1.3751 are affected by CVE-2021-39521.
How can an attacker exploit CVE-2021-39521?
Exploiting CVE-2021-39521 allows an attacker to cause Denial of Service.
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