Safety vulnerability ID: 41094
The information on this page was manually curated by our Cybersecurity Intelligence Team.
Yamale 3.0.8 includes a fix for CVE-2021-38305: 23andMe Yamale before 3.0.8 allows remote attackers to execute arbitrary code via a crafted schema file. The schema parser uses eval as part of its processing, and tries to protect from malicious expressions by limiting the builtins that are passed to the eval. When processing the schema, each line is run through Python's eval function to make the validator available. A well-constructed string within the schema rules can execute system commands; thus, by exploiting the vulnerability, an attacker can run arbitrary code on the image that invokes Yamale.
https://github.com/23andMe/Yamale/pull/165
https://github.com/23andMe/Yamale/releases/tag/3.0.8
Latest version: 6.0.0
A schema and validator for YAML.
23andMe Yamale before 3.0.8 allows remote attackers to execute arbitrary code via a crafted schema file. The schema parser uses eval as part of its processing, and tries to protect from malicious expressions by limiting the builtins that are passed to the eval. When processing the schema, each line is run through Python's eval function to make the validator available. A well-constructed string within the schema rules can execute system commands; thus, by exploiting the vulnerability, an attacker can run arbitrary code on the image that invokes Yamale. See CVE-2021-38305.
MISC:https://github.com/23andMe/Yamale/pull/165: https://github.com/23andMe/Yamale/pull/165
MISC:https://github.com/23andMe/Yamale/releases/tag/3.0.8: https://github.com/23andMe/Yamale/releases/tag/3.0.8
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