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PYSEC-2022-25

Details

UltraJSON (aka ujson) through 5.1.0 has a stack-based buffer overflow in Buffer_AppendIndentUnchecked (called from encode). Exploitation can, for example, use a large amount of indentation.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI / ujson

Introduced in: 4.0.2 Fixed in: 5.1.0

Fix pip install --upgrade 'ujson>=5.1.0'

References

https://github.com/google/oss-fuzz-vulns/blob/main/vulns/ujson/OSV-2021-955.yaml [WEB]
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=36009 [WEB]
https://github.com/ultrajson/ultrajson/issues/501 [REPORT]
https://github.com/ultrajson/ultrajson/issues/502#issuecomment-1031747284 [REPORT]
https://github.com/advisories/GHSA-fh56-85cw-5pq6 [ADVISORY]