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Vulnerability of libpng: NULL pointer dereference via png_handle_eXIf

Synthesis of the vulnerability 

An attacker can force a NULL pointer to be dereferenced via png_handle_eXIf() of libpng, in order to trigger a denial of service.
Vulnerable products: libpng.
Severity of this weakness: 1/4.
Creation date: 25/08/2017.
Références of this bulletin: VIGILANCE-VUL-23610.

Description of the vulnerability 

An attacker can force a NULL pointer to be dereferenced via png_handle_eXIf() of libpng, in order to trigger a denial of service.
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This security announce impacts software or systems such as libpng.

Our Vigil@nce team determined that the severity of this threat is low.

The trust level is of type confirmed by the editor, with an origin of document.

An attacker with a expert ability can exploit this computer vulnerability announce.

Solutions for this threat 

libpng: version 1.6.32.
The version 1.6.32 is fixed:
  https://ftp-osl.osuosl.org/pub/libpng/src/
  ftp://ftp-osl.osuosl.org/pub/libpng/src/
  http://libpng.download/src/
  http://libpng.sf.net
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