CVE-2021-39207

Deserialization of Untrusted Data in parlai

Description

parlai is a framework for training and evaluating AI models on a variety of openly available dialogue datasets. In affected versions the package is vulnerable to YAML deserialization attack caused by unsafe loading which leads to Arbitary code execution. This security bug is patched by avoiding unsafe loader users should update to version above v1.1.0. If upgrading is not possible then users can change the Loader used to SafeLoader as a workaround. See commit 507d066ef432ea27d3e201da08009872a2f37725 for details.

Category

8.4
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.35% Top 25%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com
Affected: facebookresearch ParlAI
Published at:
Updated at:

References

Link Tags
https://github.com/facebookresearch/ParlAI/security/advisories/GHSA-m87f-9fvv-2mgg third party advisory patch
https://github.com/facebookresearch/ParlAI/commit/4374fa2aba383db6526ab36e939eb1cf8ef99879 third party advisory patch
https://github.com/facebookresearch/ParlAI/commit/507d066ef432ea27d3e201da08009872a2f37725 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-39207?
CVE-2021-39207 has been scored as a high severity vulnerability.
How to fix CVE-2021-39207?
To fix CVE-2021-39207, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-39207 being actively exploited in the wild?
It is possible that CVE-2021-39207 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-39207?
CVE-2021-39207 affects facebookresearch ParlAI.
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