Vulnerability · Published Aug 10, 2021 · Assigned by mitre
CVE-2021-38371
High 7.5
In plain English
A high-severity security flaw in the exim4 package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.0% (higher than 81% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)2.0%top 19.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
The STARTTLS feature in Exim through 4.94.2 allows response injection (buffering) during MTA SMTP sending.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | exim4 | 4.95~RC2-1 | DEBIAN-CVE-2021-38371 |
| Debian:13 | exim4 | 4.95~RC2-1 | DEBIAN-CVE-2021-38371 |
| Debian:14 | exim4 | 4.95~RC2-1 | DEBIAN-CVE-2021-38371 |
Affected products (as reported)
References
- https://nostarttls.secvuln.info x_refsource_MISC
- https://www.exim.org x_refsource_MISC
- https://www.exim.org/static/doc/security/CVE-2021-38371.txt x_refsource_MISC
- https://lists.debian.org/debian-lts-announce/2024/10/msg00029.html