[OpenSIPS-Devel] [OpenSIPS/opensips] 2a6f8c: parse_msg(): Fix heap buffer overflow edge-case (O...

[Liviu Chircu]

  Branch: refs/heads/master
  Home:   https://github.com/OpenSIPS/opensips
  Commit: 2a6f8c67aa15ebf507cc9ff2bd881d771858fed7
      https://github.com/OpenSIPS/opensips/commit/2a6f8c67aa15ebf507cc9ff2bd881d771858fed7
  Author: Liviu Chircu <liviu at opensips.org>
  Date:   2022-10-08 (Sat, 08 Oct 2022)

  Changed paths:
    M parser/msg_parser.c
    M parser/test/test_parser.c

  Log Message:
  -----------
  parse_msg(): Fix heap buffer overflow edge-case (OSS-Fuzz)

This patch fixes a SIP message parsing error log which could lead to an
unsafe printing of a non-NULL terminated string.  Fortunately, the
OpenSIPS PKG memory allocator minimizes the severity of this overflow,
thanks to its pre-allocated, large chunk of heap memory.

Severity: Low
Fixes OSS-Fuzz#52204