Vulnerability Details : CVE-2021-30027
Potential exploit
md_analyze_line in md4c.c in md4c 0.4.7 allows attackers to trigger use of uninitialized memory, and cause a denial of service via a malformed Markdown document.
Vulnerability category: Denial of service
Products affected by CVE-2021-30027
- cpe:2.3:a:md4c_project:md4c:0.4.7:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-30027
0.13%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 30 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-30027
| 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 | |
|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2021-30027
-
The product uses or accesses a resource that has not been initialized.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-30027
-
https://github.com/mity/md4c/commit/4fc808d8fe8d8904f8525bb4231d854f45e23a19
md_analyze_line: Avoid reading 1 byte beyond the input size. · mity/md4c@4fc808d · GitHubPatch;Third Party Advisory
-
https://github.com/mity/md4c/issues/155
Use of uninitialized value in the md_analyze_line() function · Issue #155 · mity/md4c · GitHubExploit;Issue Tracking;Third Party Advisory
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