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Vulnerability of FontForge: buffer overflow via Type2NotDefSplines

Synthesis of the vulnerability 

An attacker can trigger a buffer overflow via Type2NotDefSplines() of FontForge, in order to trigger a denial of service, and possibly to run code.
Impacted software: openSUSE Leap, SUSE Linux Enterprise Desktop, SLES.
Severity of this computer vulnerability: 2/4.
Creation date: 17/01/2020.
Références of this announce: CVE-2020-5496, openSUSE-SU-2020:0089-1, SUSE-SU-2020:0118-1, SUSE-SU-2020:0393-1, VIGILANCE-VUL-31354.

Description of the vulnerability 

An attacker can trigger a buffer overflow via Type2NotDefSplines() of FontForge, in order to trigger a denial of service, and possibly to run code.
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This security announce impacts software or systems such as openSUSE Leap, SUSE Linux Enterprise Desktop, SLES.

Our Vigil@nce team determined that the severity of this 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 computer vulnerability announce.

Solutions for this threat 

openSUSE Leap 15.1: new fontforge packages (22/01/2020).
New packages are available:
  openSUSE Leap 15.1: fontforge 20170731-lp151.4.3.1

SUSE LE 12 SP4/5: new fontforge packages.
New packages are available:
  SUSE LE 12 SP4: fontforge 20170731-11.11.1
  SUSE LE 12 SP5: fontforge 20170731-11.11.1

SUSE LE 15 SP1: new fontforge packages.
New packages are available:
  SUSE LE 15 SP1: fontforge 20170731-4.3.2
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