CVE-2020-5235

Summary

There is a potentially exploitable out of memory condition In Nanopb before 0.4.1, 0.3.9.5, and 0.2.9.4. When nanopb is compiled with PB_ENABLE_MALLOC, the message to be decoded contains a repeated string, bytes or message field and realloc() runs out of memory when expanding the array nanopb can end up calling free() on a pointer value that comes from uninitialized memory. Depending on platform this can result in a crash or further memory corruption, which may be exploitable in some cases. This problem is fixed in nanopb-0.4.1, nanopb-0.3.9.5, nanopb-0.2.9.4.

Affected Software

VendorProductVersion RangeStatus
nanopbNanopb< 0.2.9.4affected
nanopbNanopb>= 0.3.0, < 0.3.9.5affected
nanopbNanopb>= 0.4.0, < 0.4.1affected

Weaknesses

  • CWE-125: CWE-125: Out-of-bounds Read

ADP Enrichment

CVE Program Container

Additional References

References