A vulnerability, which was classified as problematic, was found in mruby up to 3.4.0-rc2. Affected is the function scope_new of the file mrbgems/mruby-compiler/core/codegen.c of the component nregs Handler. The manipulation leads to heap-based buffer overflow. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. The name of the patch is 1fdd96104180cc0fb5d3cb086b05ab6458911bb9. It is recommended to apply a patch to fix this issue.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| https://vuldb.com/?id.315156 | technical description vdb entry |
| https://vuldb.com/?ctiid.315156 | signature permissions required |
| https://vuldb.com/?submit.607683 | third party advisory |
| https://github.com/mruby/mruby/issues/6509 | issue tracking |
| https://github.com/mruby/mruby/issues/6509#event-17145516649 | issue tracking |
| https://github.com/user-attachments/files/19619499/mruby_crash.txt | exploit |
| https://github.com/mruby/mruby/commit/1fdd96104180cc0fb5d3cb086b05ab6458911bb9 | patch |