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    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.

    Published:May 19, 2021
    Last Modified:Nov 21, 2024
    EPS:May 27, 2021
    EPSS Score:0.01473
    CVSS Score:8.5

    Affected Products

    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Linuxfoundation
    Product
    Runc
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Openshift
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhel Extras Other

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-54230 (CVSS 7) — A symlink following vulnerability was found in the ABRT post-create event handler scripts in libreport. Event …
    CVE-2026-35094 (CVSS 3.3) — A flaw was found in libinput. An attacker capable of deploying a Lua plugin file in specific system directorie…
    CVE-2026-35093 (CVSS 8.8) — A flaw was found in libinput. A local attacker who can place a specially crafted Lua bytecode file in certain …
    CVE-2024-3056 (CVSS 7.7) — A flaw was found in Podman. This issue may allow an attacker to create a specially crafted container that, whe…
    CVE-2024-6293 (CVSS 8.8) — Use after free in Dawn in Google Chrome prior to 126.0.6478.126 allowed a remote attacker to potentially explo…
    CVE-2024-6292 (CVSS 8.8) — Use after free in Dawn in Google Chrome prior to 126.0.6478.126 allowed a remote attacker to potentially explo…
    CVE-2024-6291 (CVSS 8.8) — Use after free in Swiftshader in Google Chrome prior to 126.0.6478.126 allowed a remote attacker to potentiall…
    CVE-2024-6290 (CVSS 8.8) — Use after free in Dawn in Google Chrome prior to 126.0.6478.126 allowed a remote attacker to potentially explo…
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    References

    http://www.openwall.com/lists/oss-security/2021/05/19/2
    http://www.openwall.com/lists/oss-security/2021/05/19/2
    http://www.openwall.com/lists/oss-security/2021/05/19/2
    http://www.openwall.com/lists/oss-security/2021/05/19/2
    https://bugzilla.opensuse.org/show_bug.cgi?id=1185405
    https://github.com/opencontainers/runc/commit/0ca91f44f1664da834bc61115a849b56d22f595f
    https://github.com/opencontainers/runc/releases
    https://github.com/opencontainers/runc/security/advisories/GHSA-c3xm-pvg7-gh7r
    https://lists.debian.org/debian-lts-announce/2023/03/msg00023.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/35ZW6NBZSBH5PWIT7JU4HXOXGFVDCOHH/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4HOARVIT47RULTTFWAU7XBG4WY6TDDHV/
    https://security.gentoo.org/glsa/202107-26
    https://security.netapp.com/advisory/ntap-20210708-0003/
    http://www.openwall.com/lists/oss-security/2021/05/19/2
    http://www.openwall.com/lists/oss-security/2021/05/19/2
    http://www.openwall.com/lists/oss-security/2021/05/19/2
    http://www.openwall.com/lists/oss-security/2021/05/19/2
    https://bugzilla.opensuse.org/show_bug.cgi?id=1185405
    https://github.com/opencontainers/runc/commit/0ca91f44f1664da834bc61115a849b56d22f595f
    https://github.com/opencontainers/runc/releases
    https://github.com/opencontainers/runc/security/advisories/GHSA-c3xm-pvg7-gh7r
    https://lists.debian.org/debian-lts-announce/2023/03/msg00023.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/35ZW6NBZSBH5PWIT7JU4HXOXGFVDCOHH/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4HOARVIT47RULTTFWAU7XBG4WY6TDDHV/
    https://security.gentoo.org/glsa/202107-26
    https://security.netapp.com/advisory/ntap-20210708-0003/

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High