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/[email protected]/thread/BMX7XV7YNNNOVKKIOOPNENIXY64H4ZEY/
- https://github.com/sylabs/singularity/releases/tag/v3.7.4
- https://lists.opensuse.org/archives/list/[email protected]/thread/U5WJLLGD3LSUWRS73C4NPIWYTMST4QO5/
- https://lists.fedoraproject.org/archives/list/[email protected]/thread/D2IU6GJMCV5CQKUQZLHBP6EHSIZZXC3X/
- https://lists.opensuse.org/archives/list/[email protected]/thread/L3AGIEOXZIUUEYYMWKJCJCQI7V235UTR/
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29136
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-32635
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41190

SRPMS:
- 8/core/singularity-3.8.5-1.mga8