synced 14 MIN AGO
01 Record

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

UnratedPUBLISHEDCNA: mitre
CNA base scoreUnratedNo CNA CVSS vector
View raw JSON

02 Description

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

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
10.24% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 95.6% of scored records. A rank, not a probability.
NVD base score
8.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2021-05-27 00:00Z5 YR AGO
Last updated
2024-08-03 22:32Z2 YR AGO
Reserved
2021-04-08
Assigning CNA
mitre
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')Class
  • CWE-367Time-of-check Time-of-use (TOCTOU) Race ConditionBase
Data version
5.1
Document digest
2ce385628a32ac5e13d0bdd740c23952ee29795d826f3e5156ea87532519ca10

05 Affected products

VendorProductVersionsPlatforms
fedoraprojectfedoraNot specified—
linuxfoundationruncNot specified—
redhatacmNot specified—
redhatenterprise_linuxNot specified—
redhatopenshiftNot specified—
redhatrhel_eusNot specified—
redhatrhel_extras_otherNot specified—

06 References

07 Fixed in

AlmaLinux 8

  • cockpit-podman
    Fixed

    A version is affected if any line below covers it.

    • Affected before 11-1.module_el8.5.0+108+00865455
    • Affected before 11-1.module_el8.5.0+2635+e4386a39
    • Affected before 29-2.module_el8.6.0+2876+9ed4eae2
  • conmon
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2:2.0.15-1.module_el8.5.0+108+00865455
    • Affected before 2:2.0.15-1.module_el8.5.0+2635+e4386a39
    • Affected before 2:2.0.26-1.module_el8.6.0+2876+9ed4eae2
    • Affected before 2:2.0.26-3.module_el8.7.0+3406+a17c4180
  • container-selinux
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2:2.130.0-1.module_el8.5.0+108+00865455
    • Affected before 2:2.130.0-1.module_el8.5.0+2635+e4386a39
  • containernetworking-plugins
    Fixed

    A version is affected if any line below covers it.

    • Affected before 0.8.3-4.module_el8.5.0+108+00865455
    • Affected before 0.8.3-4.module_el8.5.0+2635+e4386a39
    • Affected before 0.9.1-1.module_el8.6.0+2876+9ed4eae2
  • containers-common
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:0.1.41-4.module_el8.5.0+108+00865455
    • Affected before 1:0.1.41-4.module_el8.5.0+2635+e4386a39
  • crit
    Fixed

    A version is affected if any line below covers it.

    • Affected before 3.12-9.module_el8.3.0+2044+12421f43
    • Affected before 3.12-9.module_el8.4.0+2496+12421f43
    • Affected before 3.12-9.module_el8.5.0+119+9a9ec082
    • Affected before 3.15-1.module_el8.6.0+2876+9ed4eae2
  • criu
    Fixed

    A version is affected if any line below covers it.

    • Affected before 3.12-9.module_el8.3.0+2044+12421f43
    • Affected before 3.12-9.module_el8.4.0+2496+12421f43
    • Affected before 3.12-9.module_el8.5.0+119+9a9ec082
    • Affected before 3.15-1.module_el8.6.0+2876+9ed4eae2
  • fuse-overlayfs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 0.7.8-1.module_el8.5.0+108+00865455
    • Affected before 0.7.8-1.module_el8.5.0+2635+e4386a39
    • Affected before 1.4.0-2.module_el8.6.0+2876+9ed4eae2
  • libslirp
    Fixed in 4.3.1-1.module_el8.6.0+2876+9ed4eae2
  • libslirp-devel
    Fixed in 4.3.1-1.module_el8.6.0+2876+9ed4eae2
  • python-podman-api
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.2.0-0.2.gitd0a45fe.module_el8.5.0+108+00865455
    • Affected before 1.2.0-0.2.gitd0a45fe.module_el8.5.0+2635+e4386a39
  • python3-criu
    Fixed

    A version is affected if any line below covers it.

    • Affected before 3.12-9.module_el8.3.0+2044+12421f43
    • Affected before 3.12-9.module_el8.4.0+2496+12421f43
    • Affected before 3.12-9.module_el8.5.0+119+9a9ec082
    • Affected before 3.15-1.module_el8.6.0+2876+9ed4eae2
  • skopeo
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:0.1.41-4.module_el8.5.0+108+00865455
    • Affected before 1:0.1.41-4.module_el8.5.0+2635+e4386a39
  • skopeo-tests
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:0.1.41-4.module_el8.5.0+108+00865455
    • Affected before 1:0.1.41-4.module_el8.5.0+2635+e4386a39
  • slirp4netns
    Fixed

    A version is affected if any line below covers it.

    • Affected before 0.4.2-3.git21fdece.module_el8.5.0+108+00865455
    • Affected before 0.4.2-3.git21fdece.module_el8.5.0+2635+e4386a39
    • Affected before 1.1.8-1.module_el8.6.0+2876+9ed4eae2
  • toolbox
    Fixed

    A version is affected if any line below covers it.

    • Affected before 0.0.7-1.module_el8.5.0+108+00865455
    • Affected before 0.0.7-1.module_el8.5.0+2635+e4386a39
  • udica
    Fixed

    A version is affected if any line below covers it.

    • Affected before 0.2.1-2.module_el8.5.0+108+00865455
    • Affected before 0.2.1-2.module_el8.5.0+2635+e4386a39
    • Affected before 0.2.4-1.module_el8.6.0+2876+9ed4eae2

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Arch Linux

  • runc
    Fixed in 1.0.0rc95-1

Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.

CloudLinux 8

  • cockpit-podman
    Fixed

    A version is affected if any line below covers it.

    • Affected before 11-1.module_el8.5.0+108+00865455
    • Affected before 11-1.module_el8.5.0+2635+e4386a39
    • Affected before 29-2.module_el8.6.0+2876+9ed4eae2
  • conmon
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2:2.0.15-1.module_el8.5.0+108+00865455
    • Affected before 2:2.0.15-1.module_el8.5.0+2635+e4386a39
    • Affected before 2:2.0.26-1.module_el8.6.0+2876+9ed4eae2
    • Affected before 2:2.0.26-3.module_el8.7.0+3406+a17c4180
  • container-selinux
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2:2.130.0-1.module_el8.5.0+108+00865455
    • Affected before 2:2.130.0-1.module_el8.5.0+2635+e4386a39
  • containernetworking-plugins
    Fixed

    A version is affected if any line below covers it.

    • Affected before 0.8.3-4.module_el8.5.0+108+00865455
    • Affected before 0.8.3-4.module_el8.5.0+2635+e4386a39
    • Affected before 0.9.1-1.module_el8.6.0+2876+9ed4eae2
  • containers-common
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:0.1.41-4.module_el8.5.0+108+00865455
    • Affected before 1:0.1.41-4.module_el8.5.0+2635+e4386a39
  • crit
    Fixed

    A version is affected if any line below covers it.

    • Affected before 3.12-9.module_el8.3.0+2044+12421f43
    • Affected before 3.12-9.module_el8.4.0+2496+12421f43
    • Affected before 3.12-9.module_el8.5.0+119+9a9ec082
    • Affected before 3.15-1.module_el8.6.0+2876+9ed4eae2
  • criu
    Fixed

    A version is affected if any line below covers it.

    • Affected before 3.12-9.module_el8.3.0+2044+12421f43
    • Affected before 3.12-9.module_el8.4.0+2496+12421f43
    • Affected before 3.12-9.module_el8.5.0+119+9a9ec082
    • Affected before 3.15-1.module_el8.6.0+2876+9ed4eae2
  • fuse-overlayfs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 0.7.8-1.module_el8.5.0+108+00865455
    • Affected before 0.7.8-1.module_el8.5.0+2635+e4386a39
    • Affected before 1.4.0-2.module_el8.6.0+2876+9ed4eae2
  • libslirp
    Fixed in 4.3.1-1.module_el8.6.0+2876+9ed4eae2
  • libslirp-devel
    Fixed in 4.3.1-1.module_el8.6.0+2876+9ed4eae2
  • python-podman-api
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.2.0-0.2.gitd0a45fe.module_el8.5.0+108+00865455
    • Affected before 1.2.0-0.2.gitd0a45fe.module_el8.5.0+2635+e4386a39
  • python3-criu
    Fixed

    A version is affected if any line below covers it.

    • Affected before 3.12-9.module_el8.3.0+2044+12421f43
    • Affected before 3.12-9.module_el8.4.0+2496+12421f43
    • Affected before 3.12-9.module_el8.5.0+119+9a9ec082
    • Affected before 3.15-1.module_el8.6.0+2876+9ed4eae2
  • skopeo
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:0.1.41-4.module_el8.5.0+108+00865455
    • Affected before 1:0.1.41-4.module_el8.5.0+2635+e4386a39
  • skopeo-tests
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:0.1.41-4.module_el8.5.0+108+00865455
    • Affected before 1:0.1.41-4.module_el8.5.0+2635+e4386a39
  • slirp4netns
    Fixed

    A version is affected if any line below covers it.

    • Affected before 0.4.2-3.git21fdece.module_el8.5.0+108+00865455
    • Affected before 0.4.2-3.git21fdece.module_el8.5.0+2635+e4386a39
    • Affected before 1.1.8-1.module_el8.6.0+2876+9ed4eae2
  • toolbox
    Fixed

    A version is affected if any line below covers it.

    • Affected before 0.0.7-1.module_el8.5.0+108+00865455
    • Affected before 0.0.7-1.module_el8.5.0+2635+e4386a39
  • udica
    Fixed

    A version is affected if any line below covers it.

    • Affected before 0.2.1-2.module_el8.5.0+108+00865455
    • Affected before 0.2.1-2.module_el8.5.0+2635+e4386a39
    • Affected before 0.2.4-1.module_el8.6.0+2876+9ed4eae2

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • runc
    Fixed in 1.0.0~rc93+ds1-5

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • runc
    Fixed in 1.0.0~rc93+ds1-5

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • runc
    Fixed in 1.0.0~rc93+ds1-5

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • runc
    Fixed in 1.0.0~rc93-0ubuntu1~18.04.2

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • runc
    Fixed in 1.0.0~rc93-0ubuntu1~20.04.2

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 16.04 LTS

  • runc
    Fixed in 1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4+esm2
    Available with Ubuntu Pro: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.