CVE-2021-44512

World-writable permissions on the /tmp/tmate/sessions directory in tmate-ssh-server 2.3.0 allow a local attacker to compromise the integrity of session handling, or obtain the read-write session ID from a read-only session symlink in this directory.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7 HIGH
LOCAL
HIGH
LOW
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
mitreCNA
---
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 7%
VendorProductVersion
tmatetmate-ssh-server
𝑥
≤ 2.3.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
tmate-ssh-server
bullseye
no-dsa
sid
2.3.0-68-gd7334ee4-2
fixed
trixie
2.3.0-68-gd7334ee4-2
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
tmate-ssh-server
noble
needed
mantic
ignored
lunar
ignored
kinetic
ignored
jammy
needed
impish
ignored
hirsute
ignored
focal
dne
bionic
dne
xenial
ignored
trusty
ignored
Common Weakness Enumeration
References
https://github.com/tmate-io/tmate-ssh-server/commit/1c020d1f5ca462f5b150b46a027aaa1bbe3c9596
https://www.openwall.com/lists/oss-security/2021/12/06/2
https://github.com/tmate-io/tmate-ssh-server/commit/1c020d1f5ca462f5b150b46a027aaa1bbe3c9596
https://www.openwall.com/lists/oss-security/2021/12/06/2