An issue was discovered in ezXML 0.8.2 through 0.8.6. The function ezxml_str2utf8, while parsing a crafted XML file, performs zero-length reallocation in ezxml.c, leading to returning a NULL pointer (in some compilers). After this, the function ezxml_parse_str does not check whether the s variable is not NULL in ezxml.c, leading to a NULL pointer dereference and crash (segmentation fault).
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Ezxml | Ezxml_project | 0.8.2 (including) | 0.8.6 (including) |
| Mapcache | Ubuntu | bionic | * |
| Mapcache | Ubuntu | groovy | * |
| Mapcache | Ubuntu | hirsute | * |
| Mapcache | Ubuntu | impish | * |
| Mapcache | Ubuntu | kinetic | * |
| Mapcache | Ubuntu | lunar | * |
| Mapcache | Ubuntu | mantic | * |
| Mapcache | Ubuntu | trusty | * |
| Mapcache | Ubuntu | xenial | * |
| Netcdf | Ubuntu | bionic | * |
| Netcdf | Ubuntu | groovy | * |
| Netcdf | Ubuntu | hirsute | * |
| Netcdf | Ubuntu | impish | * |
| Netcdf | Ubuntu | kinetic | * |
| Netcdf | Ubuntu | lunar | * |
| Netcdf | Ubuntu | mantic | * |
| Netcdf | Ubuntu | trusty | * |
| Netcdf | Ubuntu | trusty/esm | * |
| Netcdf | Ubuntu | xenial | * |
| Netcdf-parallel | Ubuntu | groovy | * |
| Netcdf-parallel | Ubuntu | hirsute | * |
| Netcdf-parallel | Ubuntu | impish | * |
| Netcdf-parallel | Ubuntu | kinetic | * |
| Netcdf-parallel | Ubuntu | lunar | * |
| Netcdf-parallel | Ubuntu | mantic | * |
| Netcdf-parallel | Ubuntu | trusty | * |
| Netcdf-parallel | Ubuntu | xenial | * |
| Scilab | Ubuntu | bionic | * |
| Scilab | Ubuntu | groovy | * |
| Scilab | Ubuntu | hirsute | * |
| Scilab | Ubuntu | impish | * |
| Scilab | Ubuntu | kinetic | * |
| Scilab | Ubuntu | lunar | * |
| Scilab | Ubuntu | mantic | * |
| Scilab | Ubuntu | trusty | * |
| Scilab | Ubuntu | xenial | * |