CVE-2018-12021 Singularity Incorrect Access Control

What is CVE-2018-12021?

CVE-2018-12021 is a medium-severity vulnerability in n/a, published on 5 Jul 2018. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Singularity 2.3.0 through 2.5.1 is affected by an incorrect access control on systems supporting overlay file system. When using the overlay option, a malicious user may access sensitive information by exploiting a few specific Singularity features.

Weakness: CWE-200

Which versions are affected by CVE-2018-12021?

2 open source packages ship an affected version, including github.com/hpcng/singularity. It affects 1 product.

Products include Sylabs Singularity.

How do I fix CVE-2018-12021?

Upgrade github.com/hpcng/singularity to 2.5.2 or later.

Is CVE-2018-12021 being exploited?

There is no known exploitation of CVE-2018-12021 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2021-33027 Weak cryptography in n/a Critical 9.8
• CVE-2021-33622 Other in n/a Critical 9.8
• CVE-2018-19295 Sylabs Singularity Improper Input Validation High 7.8
• CVE-2020-13845 Execution Control List (ECL) Is Insecure in Singularity High 7.5
• CVE-2020-13846 "Verify All" Returns Success Despite Validation Failures in Singularity High 7.5

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-4x32-h296-rg6j, UBUNTU-CVE-2018-12021, openSUSE-SU-2018:1969-1.