CVE-2018-12021: sylabs singularity
Vulnerability summary
CVE-2018-12021 is a medium (CVSS 6.8) vulnerability in sylabs singularity. EPSS estimates a 1.47% chance of exploitation in the next 30 days, higher than 73.6% of scored vulnerabilities.
Not severe (CVSS 6.5, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 3 · Related 3Timeline
- 05-07-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- OSV · GoEcosystem advisory · calculated6.5MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS trend
Probability
1.47%
Chance of exploitation in the next 30 days
Percentile
74%
Versus all other CVEs
30-day change
Decrease -0.13 pp
From 1.60% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Github.com/hpcng1 product
- singularity≥ 2.3.0, < 2.5.2
Suse1 product
- singularity&distro=SUSE Package Hub 12 SP3< 2.3.2-11.1
Sylabs1 product
- singularity≥ 2.3.0, ≤ 2.5.1
Ubuntu1 product
- singularity-container< 2.4.2-4ubuntu0.1~esm1
4 vendors · 4 products
References
10 links- github.com/singularityware/singularity/releases/tag/2.5.2X Refsource CONFIRMRelease NotesThird Party AdvisoryREPORTWEB
- lists.opensuse.org/archives/…Advisory
