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Vulnerability of TightVNC: buffer overflow via rfbServerCutText

Synthesis of the vulnerability 

An attacker can trigger a buffer overflow via rfbServerCutText() of TightVNC, in order to trigger a denial of service, and possibly to run code.
Impacted systems: Debian, SUSE Linux Enterprise Desktop, SLES.
Severity of this alert: 2/4.
Creation date: 02/12/2019.
Références of this alert: CVE-2019-15678, DLA-2045-1, SUSE-SU-2019:14235-1, VIGILANCE-VUL-31031.

Description of the vulnerability 

An attacker can trigger a buffer overflow via rfbServerCutText() of TightVNC, in order to trigger a denial of service, and possibly to run code.
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This weakness bulletin impacts software or systems such as Debian, SUSE Linux Enterprise Desktop, SLES.

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

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

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

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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