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Mageia: 2022-0006 Critical: Singularity Malicious Container Threat

A dependency used to extract docker/OCI image layers can be tricked into modifying host files by creating a malicious layer that has a symlink with the name "." (or "/"), when running as root. (CVE-2021-29136) Dde to incorrect use of a default URL, `singularity` action commands (`run`/`shell`/`exec`) specifying a container using a `library://` URI . MGASA-2022-0006 - Updated singularity packages fix security vulnerability Publication date: 05 Jan 2022 URL: https://advisories.mageia.org/MGASA-2022-0006.html Type: security Affected Mageia releases: 8 CVE: CVE-2021-29136, CVE-2021-32635, CVE-2021-41190 A dependency used to extract docker/OCI image layers can be tricked into modifying host files by creating a malicious layer that has a symlink with the name "." (or "/"), when running as root. (CVE-2021-29136) Dde to incorrect use of a default URL, `singularity` action commands (`run`/`shell`/`exec`) specifying a container using a `library://` URI will always attempt to retrieve the container from the default remote endpoint (`cloud.sylabs.io`) rather than the configured remote endpoint. An attacker may be able to push a malicious container to the default remote endpoint with a URI that is identical to the URI used by a victim with a non-default remote endpoint, thus executing the malicious container. Only action commands (`run`/`shell`/`exec`) against `library://` URIs are affected. Other commands such as `pull` / `push` respect the configured remote endpoint. (CVE-2021-32635) If a Content-Type header changed between two pulls of the same digest, a client may interpret the resulting content differently. (CVE-2021-41190) References: - https://bugs.mageia.org/show_bug.cgi?id=29027 - https://lists.fedoraproject.org/archives/list/This email address is being protected from spambots. You need JavaScript enabled to view it./thread/BMX7XV7YNNNOVKKIOOPNENIXY64H4ZEY/ - https://github.com/sylabs/singularity/releases/tag/v3.7.4 - - https://lists.fedoraproject.org/archives/list/This email address is being protected from spambots. You need JavaScript enabled to view it./thread/D2IU6GJMCV5CQKUQZLHBP6EHSIZZXC3X/ - -https://www.cve.org/CVERecord?id=CVE-2021-29136 - https://www.cve.org/CVERecord?id=CVE-2021-32635 - https://www.cve.org/CVERecord?id=CVE-2021-41190 SRPMS: - 8/core/singularity-3.8.5-1.mga8 . MGASA-2022-0007 tackles significant vulnerabilities in the authentication mechanism of the framework, improving defense protocols.. Singularity Update, Mageia Security, Malicious Container Issue. . Severity: Critical. LinuxSecurity.com Team

Jan 05, 2022 •Critical Mageia