Description
An issue was discovered in Singularity 3.1.0 to 3.2.0-rc2, a malicious user with local/network access to the host system (e.g. ssh) could exploit this vulnerability due to insecure permissions allowing a user to edit files within `/run/singularity/instances/sing/<user>/<instance>`. The manipulation of those files can change the behavior of the starter-suid program when instances are joined resulting in potential privilege escalation on the host.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 15 SP1 | singularity | 3.4.1-bp151.3.3.1 | openSUSE-SU-2019:2288-1 |
| SUSE Package Hub 15 | singularity | 3.4.1-bp151.3.3.1 | openSUSE-SU-2019:2288-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | singularity | 3.8.3-1.2 | openSUSE-SU-2024:11384-1 |
| openSUSE Leap 15.1 | singularity | 3.6.0-lp151.2.6.1 | openSUSE-SU-2020:1037-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/sylabs/singularity | >= 3.1.0, < 3.2.0 | 3.2.0 | GHSA-557g-r22w-9wvx |
Advisories 3
- openSUSE-SU-2019:2288-1 Security update for singularity SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:1037-1 Security update for singularity SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11384-1 singularity-3.8.3-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://github.com/sylabs/singularity/releases/tag/v3.2.0
- [oss-security] 20190516 Singularity 3.1.0: CVE-2019-11328: namespace privilege escalation and arbitrary file corruption mailing-list
- 108360 vdb-entry
- FEDORA-2019-da2ed3b0b5 vendor-advisory
- FEDORA-2019-9f48c6fedc vendor-advisory
- FEDORA-2019-25ecc42592 vendor-advisory
- openSUSE-SU-2019:2288 vendor-advisory
- openSUSE-SU-2020:1037 vendor-advisory