Vulnerability · Published Aug 30, 2021 · Assigned by mitre
CVE-2021-36370
High 7.5
In plain English
A high-severity security flaw in the mc 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 19.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
An issue was discovered in Midnight Commander through 4.8.26. When establishing an SFTP connection, the fingerprint of the server is neither checked nor displayed. As a result, a user connects to the server without the ability to verify its authenticity.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | mc | 3:4.8.27-1 | DEBIAN-CVE-2021-36370 |
| Debian:13 | mc | 3:4.8.27-1 | DEBIAN-CVE-2021-36370 |
| Debian:14 | mc | 3:4.8.27-1 | DEBIAN-CVE-2021-36370 |
| Ubuntu:22.04:LTS | mc | 3:4.8.27-1 | UBUNTU-CVE-2021-36370 |
Affected products (as reported)
References
- https://github.com/MidnightCommander/mc/blob/master/src/vfs/sftpfs/connection.c x_refsource_MISC
- https://github.com/MidnightCommander/mc/blob/5c1d3c55dd15356ec7d079084d904b7b0fd58d3e/src/vfs/sftpfs/connection.c#L484 x_refsource_MISC
- https://sourceforge.net/projects/mcwin32/files/ x_refsource_MISC
- https://midnight-commander.org/ x_refsource_MISC
- https://docs.ssh-mitm.at/CVE-2021-36370.html x_refsource_MISC
- https://mail.gnome.org/archives/mc-devel/2021-August/msg00008.html x_refsource_MISC