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Vulnerability record · CVE-2019-11328 · published 14 May 2019

CVE-2019-11328: Sylabs singularity incorrect permission assignment vulnerability

Sylabs · Singularity

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.

8.8 CVSS 3.1 High EPSS 2.1% · top 18.7% CWE-732 · Incorrect permission assignment
8.8CVSS 3.1 base score, v2 9.0
2.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
16References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00028.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00059.html Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/05/16/1 ExploitMailing ListThird Party Advisory
http://www.securityfocus.com/bid/108360 Broken Link
https://github.com/sylabs/singularity/releases/tag/v3.2.0 Release Notes
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5O3TPL5OOTIZEI4H6IQBCCI
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LIHV7DSEVTB5SUPEZ2UXGS3
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LNU5BUHFOTYUZVHFUSX2VG4
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00028.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00059.html Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/05/16/1 ExploitMailing ListThird Party Advisory
http://www.securityfocus.com/bid/108360 Broken Link
https://github.com/sylabs/singularity/releases/tag/v3.2.0 Release Notes
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5O3TPL5OOTIZEI4H6IQBCCI
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LIHV7DSEVTB5SUPEZ2UXGS3
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LNU5BUHFOTYUZVHFUSX2VG4

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Source: NIST National Vulnerability Database (record CVE-2019-11328), CISA KEV, FIRST EPSS (scores of 2026-10-19). This page is refreshed as NVD updates the record.