Vulnerability · Published Apr 29, 2021 · Assigned by mitre
CVE-2021-30027
Medium 5.5
In plain English
A medium-severity security flaw in the md4c package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 53% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.7%top 46.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | md4c | 0.4.7-2 | DEBIAN-CVE-2021-30027 |
| Debian:13 | md4c | 0.4.7-2 | DEBIAN-CVE-2021-30027 |
| Debian:14 | md4c | 0.4.7-2 | DEBIAN-CVE-2021-30027 |
Affected products (as reported)
References
- https://github.com/mity/md4c/issues/155 x_refsource_MISC
- https://github.com/mity/md4c/commit/4fc808d8fe8d8904f8525bb4231d854f45e23a19 x_refsource_MISC