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CVE-2019-19921

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Date: February 12, 2020

runc through 1.0.0-rc9 has Incorrect Access Control leading to Escalation of Privileges, related to libcontainer/rootfs_linux.go. To exploit this, an attacker must be able to spawn two containers with custom volume-mount configurations, and be able to run custom images. (This vulnerability does not affect Docker due to an implementation detail that happens to block the attack.)

Language: Go

Severity Score

Related Resources (20)

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FNB2UEDIIJCRQW4WJLZOPQJZXCVSXMLD/
https://github.com/opencontainers/runc/releases
https://access.redhat.com/errata/RHSA-2020:0695
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FYVE3GB4OG3BNT5DLQHYO4M5SXX33AQ5/
https://usn.ubuntu.com/4297-1/
http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00018.html
https://github.com/opencontainers/runc/issues/2197
https://nvd.nist.gov/vuln/detail/CVE-2019-19921
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ANUGDBJ7NBUMSUFZUSKU3ZMQYZ2Z3STN/
https://lists.debian.org/debian-lts-announce/2023/03/msg00023.html
https://security-tracker.debian.org/tracker/CVE-2019-19921
https://access.redhat.com/errata/RHSA-2020:0688
https://github.com/opencontainers/runc/pull/2190
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/I6BF24VCZRFTYBTT3T7HDZUOTKOTNPLZ/
https://security.alpinelinux.org/vuln/CVE-2019-19921
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DHGVGGMKGZSJ7YO67TGGPFEHBYMS63VF/
https://people.canonical.com/~ubuntu-security/cve/CVE-2019-19921
https://access.redhat.com/security/cve/CVE-2019-19921
https://security.gentoo.org/glsa/202003-21
https://www.mend.io/vulnerability-database/CVE-2019-19921

Severity Score

Weakness Type (CWE)

Use of Incorrectly-Resolved Name or Reference

CWE-706

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): HIGH
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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