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NVD / CVE Program· CNA mitre

CVE-2019-19724: Insecure permissions (777) are set on $HOME/.singularity when it is newly created by Singularity (version from 3.3.0 to 3.5.1), which could

Noroxi assessment

Priority: Monitor (action score 30/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.2% (FIRST EPSS); higher than 68.8% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: github.com/sylabs/singularity (Go) 3.5.2; singularity (openSUSE:Leap 15.1) 2.6.1-lp151.2.3.1, 3.6.0-lp151.2.6.1; singularity (openSUSE:Tumbleweed) 3.8.3-1.2.

Low priority for now. Upgrade to github.com/sylabs/singularity (Go) 3.5.2; singularity (openSUSE:Leap 15.1) 2.6.1-lp151.2.3.1, 3.6.0-lp151.2.6.1; singularity (openSUSE:Tumbleweed) 3.8.3-1.2 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Insecure permissions (777) are set on $HOME/.singularity when it is newly created by Singularity (version from 3.3.0 to 3.5.1), which could lead to an information leak, and malicious redirection of operations performed against Sylabs cloud services.

HighCVSS 7.5 · v3.1—No exploit Fix available
Published
Dec 18, 2019
Updated
Jun 16, 2026
EPSS
1.2% · 68th percentile

Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.2%

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
sylabssingularity

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • sylabs singularity3.3.0 and later · up to 3.5.1 inclusive

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Gogithub.com/sylabs/singularityfrom 3.3.0 · before 3.5.23.5.2
openSUSE:Leap 15.1singularitybefore 2.6.1-lp151.2.3.12.6.1-lp151.2.3.1
openSUSE:Leap 15.1singularitybefore 3.6.0-lp151.2.6.13.6.0-lp151.2.6.1
openSUSE:Tumbleweedsingularitybefore 3.8.3-1.23.8.3-1.2

Same product

sylabs: all records

Other highest-scoring records for the same primary product.

  • CVE-2021-33027Sylabs Singularity Enterprise through 1.6.2 has Insufficient Entropy in a nonce.
    39Monitor
  • CVE-2021-33622Sylabs Singularity 3.5.x and 3.6.x, and SingularityPRO before 3.5-8, has an Incorrect Check of a Function's Return Value.
    39Monitor
  • CVE-2020-15229Path traversal and files overwrite with unsquashfs
    38Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2018-19295Dec 17, 2018 · Sylabs Singularity 2.4 to 2.6 allows local users to conduct Improper Input Validation attacks.
    31Monitor
  • ← EarlierCVE-2019-11328May 14, 2019 · 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.
    36Monitor
  • Later →CVE-2020-13845Jul 14, 2020 · Sylabs Singularity 3.0 through 3.5 has Improper Validation of an Integrity Check Value.
    30Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Go:github.com/sylabs/singularity3.5.2Package registry (OSV)
opensuse:singularity2.6.1-lp151.2.3.1 · openSUSE:Leap 15.1Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-276 · Incorrect Default Permissions

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

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References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records