CVE-2021-45958

Description

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.

Affected Platforms

Weakness Type

CWE-787

References

• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=36009
• https://github.com/google/oss-fuzz-vulns/blob/main/vulns/ujson/OSV-2021-955.yaml
• https://github.com/ultrajson/ultrajson/issues/501
• https://github.com/ultrajson/ultrajson/issues/502#issuecomment-1031747284
• https://github.com/ultrajson/ultrajson/pull/504
• https://lists.debian.org/debian-lts-announce/2022/02/msg00023.html