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Synthesis of the vulnerability 
An attacker can force a NULL pointer to be dereferenced via HandleZlibBPP() of TightVNC, in order to trigger a denial of service.
 Impacted software: Debian, SUSE Linux Enterprise Desktop, SLES.
Severity of this computer vulnerability: 2/4.
Creation date: 02/12/2019.
Références of this announce: CVE-2019-15680, DLA-2045-1, SUSE-SU-2019:14235-1, VIGILANCE-VUL-31030.
Description of the vulnerability 
An attacker can force a NULL pointer to be dereferenced via HandleZlibBPP() of TightVNC, in order to trigger a denial of service.
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This threat announce impacts software or systems such as Debian, SUSE Linux Enterprise Desktop, SLES.
Our Vigil@nce team determined that the severity of this cybersecurity alert 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 security alert.
Solutions for this threat 
Debian 8: new tightvnc packages.
New packages are available:
Debian 8: tightvnc 1.3.9-6.5+deb8u1
SUSE LE 11 SP3: new tightvnc packages.
New packages are available:
SUSE LE 11 SP3: tightvnc 1.3.9-81.15.3.1
SUSE LE 11 SP4: tightvnc 1.3.9-81.15.3.1
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Vigil@nce provides software vulnerabilities announces. The Vigil@nce security watch publishes vulnerability bulletins about threats impacting the information system.
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