CVE-2021-21401

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.
Configurations

Configuration 1

cpe:2.3:a:nanopb_project:nanopb:*:*:*:*:*:*:*:*
cpe:2.3:a:nanopb_project:nanopb:*:*:*:*:*:*:*:*

Information

Published : 2021-03-23 06:15

Updated : 2021-03-29 02:50


NVD link : CVE-2021-21401

Mitre link : CVE-2021-21401

Products Affected
No products.
CWE