YAML::Syck versions through 1.36 for Perl has several potential security vulnerabilities including a high-severity heap buffer overflow in the YAML emitter. The heap overflow occurs when class names exceed the initial 512-byte allocation. The base64 decoder could read past the buffer end on trailing newlines. strtok mutated n->type_id in place, corrupting shared node data. A memory leak occurred in syck_hdlr_add_anchor when a node already had an anchor. The incoming anchor string 'a' was leaked on early return.
| Vendor | Product | Versions |
|---|---|---|
| toddr | yaml\ | < 1.37 |
Downstream vendors/products affected by this vulnerability
| Vendor | Product | Source | Confidence |
|---|---|---|---|
| cpanel | cpanel/whm | cert_advisory | 90% |
Updated vendor to cPanel, added product details, changed severity to HIGH, and noted that the vulnerability allows for code execution and DoS.
Initial creation
