Vulnerability Details : CVE-2021-39521
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.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2021-39521
- cpe:2.3:a:gnu:libredwg:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-39521
0.08%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 32 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-39521
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:N/A:P |
8.6
|
2.9
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
NIST |
CWE ids for CVE-2021-39521
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-39521
-
https://github.com/LibreDWG/libredwg/issues/262
A Segmentation fault in bits.c:186 · Issue #262 · LibreDWG/libredwg · GitHubExploit;Issue Tracking;Patch;Third Party Advisory
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