جزئیات آسیب‌پذیری

Cpanel::JSON::XS versions before 4.80 for Perl allow memory exhaustion by buffering incremental input past max_size in incr_parse. The parser appends each chunk to its buffer. In scalar or list context, it compares max_size with how far it has progressed, not with the buffer length. A chunk that starts with a NUL byte stops the parser before it progresses, and a call in void context skips the check, so the buffer grows without limit. A peer streaming data to an incr_parse consumer can exhaust process memory regardless of max_size.

• https://github.com/rurban/Cpanel-JSON-XS/commit/d516f296b1714e06b0fb9eaae72f4558ae3d83d6.patch patch
• https://metacpan.org/release/RURBAN/Cpanel-JSON-XS-4.80/changes release-notes