CVE-2019-11328
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.09%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.09% probability · 81th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-732
- Affected
- sylabs/singularity · fedoraproject/fedora · opensuse/backports · opensuse/leap
- Source
- cve@mitre.org
References
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00028.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00059.htmlThird Party Advisory
- http://www.openwall.com/lists/oss-security/2019/05/16/1Exploit, Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/108360Broken Link
- https://github.com/sylabs/singularity/releases/tag/v3.2.0Release Notes
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5O3TPL5OOTIZEI4H6IQBCCISBARJ6WL3/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LIHV7DSEVTB5SUPEZ2UXGS3Q6WMEQSO2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LNU5BUHFOTYUZVHFUSX2VG4S3RCPUEMA/
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00028.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00059.htmlThird Party Advisory
- http://www.openwall.com/lists/oss-security/2019/05/16/1Exploit, Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/108360Broken Link
- https://github.com/sylabs/singularity/releases/tag/v3.2.0Release Notes
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5O3TPL5OOTIZEI4H6IQBCCISBARJ6WL3/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LIHV7DSEVTB5SUPEZ2UXGS3Q6WMEQSO2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LNU5BUHFOTYUZVHFUSX2VG4S3RCPUEMA/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.