What’s Vulnerable › Vulnerabilities

CVE-2022-39237: Digital Signature Hash Algorithms Not Validated in sylabs/sif

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-10-06 · updated 2026-06-17
• Weakness: CWE-347

Description

syslabs/sif is the Singularity Image Format (SIF) reference implementation. In versions prior to 2.8.1the `github.com/sylabs/sif/v2/pkg/integrity` package did not verify that the hash algorithm(s) used are cryptographically secure when verifying digital signatures. A patch is available in version >= v2.8.1 of the module. Users are encouraged to upgrade. Users unable to upgrade may independently validate that the hash algorithm(s) used for metadata digest(s) and signature hash are cryptographically secure.

Affected products

• sylabs Singularity Image Format: before 2.8.1 — fixed in 2.8.1

How to fix

Upgrade to a fixed version: sylabs Singularity Image Format 2.8.1. Check the vendor advisory for mitigations.

References

• https://github.com/sylabs/sif/commit/07fb86029a12e3210f6131e065570124605daeaa
• https://github.com/sylabs/sif/security/advisories/GHSA-m5m3-46gj-wch8
• https://security.gentoo.org/glsa/202210-19
• https://github.com/sylabs/sif/commit/07fb86029a12e3210f6131e065570124605daeaa
• https://github.com/sylabs/sif/security/advisories/GHSA-m5m3-46gj-wch8
• https://security.gentoo.org/glsa/202210-19

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