Description (CNA)
Nanopb is a small code-size Protocol Buffers implementation in ansi C. In Nanopb before versions 0.3.9.8 and 0.4.5, decoding a specifically formed message can cause invalid `free()` or `realloc()` calls if the message type contains an `oneof` field, and the `oneof` directly contains both a pointer field and a non-pointer field. If the message data first contains the non-pointer field and then the pointer field, the data of the non-pointer field is incorrectly treated as if it was a pointer value. Such message data rarely occurs in normal messages, but it is a concern when untrusted data is parsed. This has been fixed in versions 0.3.9.8 and 0.4.5. See referenced GitHub Security Advisory for more information including workarounds.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| nanopb / nanopb | affected >= 0.3.2, <= 0.3.9.7; affected >= 0.4.0, <= 0.4.4 |
CWE
CWE-763
References
- https://github.com/nanopb/nanopb/security/advisories/GHSA-7mv5-5mxh-qg88
- https://github.com/nanopb/nanopb/issues/647
- https://github.com/nanopb/nanopb/commit/e2f0ccf939d9f82931d085acb6df8e9a182a4261
- https://github.com/nanopb/nanopb/blob/c9124132a604047d0ef97a09c0e99cd9bed2c818/CHANGELOG.txt#L1
ADP enrichment
No English description supplied.