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Fencer Vulns
high 8.8

CVE-2019-11328 json

Incorrect Permission Assignment for Critical Resource in Singularity

published 2019-05-14 7 y ago modified 2026-06-17 4 mo ago also GHSA-557g-r22w-9wvx , EUVD-2021-2444

cvss
8.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.1%
EPSS 2.1% chance of exploitation in 30 days, percentile 81%
public exploits
0
none known

Summary

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.

Patch / fix

  • go github.com/sylabs/singularity 3.2.0
  • sylabs singularity 3.2.0
  • singularity openSUSE Tumbleweed 3.8.3-1.2
  • singularity openSUSE Leap 15.1 3.6.0-lp151.2.6.1
  • singularity Package Hub 15 SP1, Package Hub 15 3.4.1-bp151.3.3.1

opensuse advisories openSUSE-SU-2024:11384-1openSUSE-SU-2020:1037-1openSUSE-SU-2019:2288-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-11328 updated cvss 6.3

singularity: manipulation of file within run/singularity/instances/sing/<user>/<instance> leads to privilege escalation

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.09% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • openwall.com http://www.openwall.com/lists/oss-security/2019/05/16/1 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 9.0 AV:N/AC:L/Au:S/C:C/I:C/A:C
GitHub 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
go github.com/sylabs/singularity
>=3.1.0, <3.2.0
3.2.0

Classification

Weakness
  • CWE-732 Incorrect Permission Assignment for Critical Resource
  • CWE-269 Improper Privilege Management

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.