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Fencer Vulns
medium 6.5

CVE-2018-12021 json

Singularity Incorrect Access Control

published 2018-07-05 8 y ago modified 2026-06-17 4 mo ago also GHSA-4x32-h296-rg6j , EUVD-2022-2468

cvss
6.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.5%
EPSS 1.5% chance of exploitation in 30 days, percentile 73%
public exploits
0
none known

Summary

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.

Patch / fix

  • go github.com/hpcng/singularity 2.5.2
  • singularity-container Ubuntu Pro 18.04 LTS 2.4.2-4ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2018-12021

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • singularity openSUSE Tumbleweed 3.8.3-1.2
  • singularity Package Hub 12 SP3 2.6.1-14.1
  • singularity Package Hub 12 SP3 2.3.2-11.1

opensuse advisories openSUSE-SU-2024:11384-1openSUSE-SU-2019:0095-1openSUSE-SU-2018:1969-1

Exploit prediction

1.47% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 6.8 AV:N/AC:L/Au:S/C:C/I:N/A:N
GitHub 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
go github.com/hpcng/singularity
>=2.3.0, <2.5.2
2.5.2

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

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.