CVE-2021-30465

runc before 1.0.0-rc95 allows a Container Filesystem Breakout via Directory Traversal. To exploit the vulnerability, an attacker must be able to create multiple containers with a fairly specific mount configuration. The problem occurs via a symlink-exchange attack that relies on a race condition.
Race Condition
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
8.5 HIGH
NETWORK
HIGH
LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
mitreCNA
---
---
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 84%
VendorProductVersion
linuxfoundationrunc
𝑥
≤ 0.1.1
linuxfoundationrunc
1.0.0:rc1
linuxfoundationrunc
1.0.0:rc10
linuxfoundationrunc
1.0.0:rc2
linuxfoundationrunc
1.0.0:rc3
linuxfoundationrunc
1.0.0:rc4
linuxfoundationrunc
1.0.0:rc5
linuxfoundationrunc
1.0.0:rc6
linuxfoundationrunc
1.0.0:rc7
linuxfoundationrunc
1.0.0:rc8
linuxfoundationrunc
1.0.0:rc9
linuxfoundationrunc
1.0.0:rc90
linuxfoundationrunc
1.0.0:rc91
linuxfoundationrunc
1.0.0:rc92
linuxfoundationrunc
1.0.0:rc93
linuxfoundationrunc
1.0.0:rc94
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
runc
bullseye
1.0.0~rc93+ds1-5+deb11u5
fixed
stretch
no-dsa
bullseye (security)
1.0.0~rc93+ds1-5+deb11u3
fixed
bookworm
1.1.5+ds1-1+deb12u1
fixed
bookworm (security)
1.1.5+ds1-1+deb12u1
fixed
trixie
1.1.12+ds1-5.1
fixed
sid
1.1.15+ds1-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
runc
jammy
Fixed 1.0.0~rc93-0ubuntu2
released
impish
Fixed 1.0.0~rc93-0ubuntu2
released
hirsute
Fixed 1.0.0~rc93-0ubuntu1.1
released
groovy
Fixed 1.0.0~rc93-0ubuntu1~20.10.2
released
focal
Fixed 1.0.0~rc93-0ubuntu1~20.04.2
released
bionic
Fixed 1.0.0~rc93-0ubuntu1~18.04.2
released
xenial
Fixed 1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4+esm2
released
trusty
dne
References