MGASA-2021-0553 - Updated opencontainers-runc packages fix security vulnerability

Publication date: 10 Dec 2021
URL: https://advisories.mageia.org/MGASA-2021-0553.html
Type: security
Affected Mageia releases: 8
CVE: CVE-2021-43784

It was discovered that there was an overflow issue in runc, the runtime
for the Open Container Project, often used with Docker. The Netlink
'bytemsg' length field could have allowed an attacker to override
Netlink-based container configurations. This vulnerability required the
attacker to have some control over the configuration of the container, but
would have allowed the attacker to bypass the namespace restrictions of
the container by simply adding their own Netlink payload which disables
all namespaces. (CVE-2021-43784)

References:
- https://bugs.mageia.org/show_bug.cgi?id=29738
- https://www.debian.org/lts/security/2021/dla-2841
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43784

SRPMS:
- 8/core/opencontainers-runc-1.0.3-1.mga8

Mageia 2021-0553: opencontainers-runc security update

It was discovered that there was an overflow issue in runc, the runtime for the Open Container Project, often used with Docker

Summary

It was discovered that there was an overflow issue in runc, the runtime for the Open Container Project, often used with Docker. The Netlink 'bytemsg' length field could have allowed an attacker to override Netlink-based container configurations. This vulnerability required the attacker to have some control over the configuration of the container, but would have allowed the attacker to bypass the namespace restrictions of the container by simply adding their own Netlink payload which disables all namespaces. (CVE-2021-43784)

References

- https://bugs.mageia.org/show_bug.cgi?id=29738

- https://www.debian.org/lts/security/2021/dla-2841

- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43784

Resolution

MGASA-2021-0553 - Updated opencontainers-runc packages fix security vulnerability

SRPMS

- 8/core/opencontainers-runc-1.0.3-1.mga8

Severity
Publication date: 10 Dec 2021
URL: https://advisories.mageia.org/MGASA-2021-0553.html
Type: security
CVE: CVE-2021-43784

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