The Vigil@nce team watches public vulnerabilities impacting your computers, and then offers security solutions, a vigilance database and tools to fix them.

Vulnerability of libpng: buffer overflow via png_do_expand

Synthesis of the vulnerability 

An attacker can generate a buffer overflow via png_do_expand() of libpng, in order to trigger a denial of service, and possibly to run code.
Impacted products: libpng, XnView.
Severity of this bulletin: 2/4.
Creation date: 16/03/2017.
Références of this threat: VIGILANCE-VUL-22161.

Description of the vulnerability 

An attacker can generate a buffer overflow via png_do_expand() of libpng, in order to trigger a denial of service, and possibly to run code.
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

This threat impacts software or systems such as libpng, XnView.

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

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

An attacker with a expert ability can exploit this cybersecurity bulletin.

Solutions for this threat 

libpng: version 1.6.29.
The version 1.6.29 is fixed:
  ftp://ftp.simplesystems.org/pub/png/src/libpng16/
  http://libpng.sf.net

libpng: version 1.5.29.
The version 1.5.29 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

XnView: version 2.40.
The version 2.40 is fixed:
  http://www.xnview.com/en/xnview/#downloads
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

Computer vulnerabilities tracking service 

Vigil@nce provides application vulnerability patches. The Vigil@nce computer vulnerability tracking service alerts your teams of vulnerabilities or threats impacting your information system.