The server in Chocolate Doom 3.0.0 and Crispy Doom 5.8.0 doesn't validate the user-controlled num_players value, leading to a buffer overflow. A malicious user can overwrite the server's stack.
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.
| Link | Tags |
|---|---|
| https://github.com/chocolate-doom/chocolate-doom/issues/1293 | exploit third party advisory patch |
| http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00002.html | mailing list third party advisory vendor advisory |
| http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00007.html | mailing list third party advisory vendor advisory |
| http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00012.html | mailing list third party advisory vendor advisory |