What is CVE-2022-39237?

CVE-2022-39237 is a medium-severity use of a broken or risky cryptographic algorithm vulnerability in github.com/sylabs/sif/v2 (go), affecting versions < 2.8.1. It is fixed in 2.8.1. The application uses a cryptographic algorithm known to have weaknesses, such as MD5, SHA-1, or DES.

How severe is CVE-2022-39237?

CVE-2022-39237 has a CVSS score of 6.3 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.

Which versions of github.com/sylabs/sif/v2 are affected by CVE-2022-39237?

github.com/sylabs/sif/v2 (go) versions < 2.8.1 is affected.

Is there a fix for CVE-2022-39237?

Yes. CVE-2022-39237 is fixed in 2.8.1. Upgrade to this version or later.

Is CVE-2022-39237 exploitable, and should I be worried?

Whether CVE-2022-39237 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

What actually determines whether CVE-2022-39237 is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

How do I fix CVE-2022-39237?

Upgrade github.com/sylabs/sif/v2 to 2.8.1 or later.

CVE-2022-39237 in github.com/sylabs/sif/v2

Q: How severe is CVE-2022-39237?

CVE-2022-39237 has a CVSS score of 6.3 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.

Q: Which versions of github.com/sylabs/sif/v2 are affected by CVE-2022-39237?

github.com/sylabs/sif/v2 (go) versions < 2.8.1 is affected.

Q: Is there a fix for CVE-2022-39237?

Yes. CVE-2022-39237 is fixed in 2.8.1. Upgrade to this version or later.

Q: Is CVE-2022-39237 exploitable, and should I be worried?

Whether CVE-2022-39237 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

Q: What actually determines whether CVE-2022-39237 is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

Q: How do I fix CVE-2022-39237?

Upgrade github.com/sylabs/sif/v2 to 2.8.1 or later.

Summary

SIF's Digital Signature Hash Algorithms Not Validated

Workarounds

Users may independently validate that the hash algorithm(s) used for metadata digest(s) and signature hash are cryptographically secure.

References

For more information

If you have any questions or comments about this advisory:

Open an issue in github.com/sylabs/sif
Email us at [email protected]

Impact

The github.com/sylabs/sif/v2/pkg/integrity package does not verify that the hash algorithm(s) used are cryptographically secure when verifying digital signatures.

The application uses a cryptographic algorithm known to have weaknesses, such as MD5, SHA-1, or DES. Typical impact: compromised confidentiality or integrity of protected data.

CVE-2022-39237 has a CVSS score of 6.3 (Medium). The vector is network-reachable, no privileges required, and user interaction required. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (2.8.1); upgrading removes the vulnerable code path.

Affected versions

github.com/sylabs/sif/v2 (< 2.8.1)

Security releases

github.com/sylabs/sif/v2 → 2.8.1 (go)

Kodem intelligence

Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.

Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.

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See it in your environment New to Kodem? Get a demo →

Remediation advice

A patch is available in version >= v2.8.1 of the module. Users are encouraged to upgrade.

The patch is commit https://github.com/sylabs/sif/commit/07fb86029a12e3210f6131e065570124605daeaa

Frequently Asked Questions

What is CVE-2022-39237? CVE-2022-39237 is a medium-severity use of a broken or risky cryptographic algorithm vulnerability in github.com/sylabs/sif/v2 (go), affecting versions < 2.8.1. It is fixed in 2.8.1. The application uses a cryptographic algorithm known to have weaknesses, such as MD5, SHA-1, or DES.
How severe is CVE-2022-39237? CVE-2022-39237 has a CVSS score of 6.3 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
Which versions of github.com/sylabs/sif/v2 are affected by CVE-2022-39237? github.com/sylabs/sif/v2 (go) versions < 2.8.1 is affected.
Is there a fix for CVE-2022-39237? Yes. CVE-2022-39237 is fixed in 2.8.1. Upgrade to this version or later.
Is CVE-2022-39237 exploitable, and should I be worried? Whether CVE-2022-39237 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
What actually determines whether CVE-2022-39237 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
How do I fix CVE-2022-39237? Upgrade github.com/sylabs/sif/v2 to 2.8.1 or later.