CVE-2021-41110
Versions prior to 1.3.1 contain a Deserialization of Untrusted Data vulnerability.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.81%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
cwlviewer is a web application to view and share Common Workflow Language workflows. Versions prior to 1.3.1 contain a Deserialization of Untrusted Data vulnerability. Commit number f6066f09edb70033a2ce80200e9fa9e70a5c29de (dated 2021-09-30) contains a patch. There are no available workarounds aside from installing the patch. The SnakeYaml constructor, by default, allows any data to be parsed. To fix the issue the object needs to be created with a `SafeConstructor` object, as seen in the patch.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.81% probability · 86th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-502
- Affected
- commonwl/cwlviewer
- Source
- security-advisories@github.com
References
- https://github.com/common-workflow-language/cwlviewer/commit/f6066f09edb70033a2ce80200e9fa9e70a5c29dePatch, Third Party Advisory
- https://github.com/common-workflow-language/cwlviewer/security/advisories/GHSA-7g7j-f5g3-fqp7Patch, Third Party Advisory
- https://www.fatalerrors.org/a/analysis-of-the-snakeyaml-deserialization-in-java-security.htmlExploit, Third Party Advisory
- https://github.com/common-workflow-language/cwlviewer/commit/f6066f09edb70033a2ce80200e9fa9e70a5c29dePatch, Third Party Advisory
- https://github.com/common-workflow-language/cwlviewer/security/advisories/GHSA-7g7j-f5g3-fqp7Patch, Third Party Advisory
- https://www.fatalerrors.org/a/analysis-of-the-snakeyaml-deserialization-in-java-security.htmlExploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.