CVE-2021-36370: midnight-commander midnight_commander Improper Authentication
Vulnerability summary
CVE-2021-36370 is a high (CVSS 7.5) Improper Authentication vulnerability in midnight-commander midnight_commander. EPSS estimates a 1.99% chance of exploitation in the next 30 days, higher than 80.3% of scored vulnerabilities. 2 public exploits are recorded.
Timeline
- 30-08-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS trend
Probability
1.99%
Chance of exploitation in the next 30 days
Percentile
80%
Versus all other CVEs
30-day change
0.00 pp
From 1.99% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
2 foundMc
Maturity: poc
Exploit Reference (docs.ssh-mitm.at)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Opensuse2 products
- mc&distro=openSUSE Leap 15.3< 4.8.27-bp153.2.3.1
- mc&distro=openSUSE Tumbleweed< 4.8.27-1.1
Debian1 product
- mc< 3:4.8.27-1
Mageia1 product
- mc< 4.8.27-1.mga8
Midnight-commander1 product
- midnight_commander≤ 4.8.26
Suse1 product
- mc&distro=SUSE Package Hub 15 SP3< 4.8.27-bp153.2.3.1
Ubuntu1 product
- mc< 3:4.8.11-1ubuntu0.1~esm1 | < 3:4.8.15-2ubuntu0.1~esm1 | < 3:4.8.19-1ubuntu0.1~esm1 | < 3:4.8.24-2ubuntu1+esm1 | < 3:4.8.27-1
6 vendors · 7 products
References
17 links- github.com/MidnightCommander/mc/blob/master/src/vfs/sftpfs/connection.cX Refsource MISCREPORTExploitThird Party Advisory
- mail.gnome.org/archives/mc-devel/2021-August/msg00008.htmlX Refsource MISCRelease NotesThird Party Advisory
