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Vulnerability of newusers: buffer overflow

Synthesis of the vulnerability 

An attacker can generate a buffer overflow of newusers, in order to trigger a denial of service, and possibly to run code.
Impacted products: Debian, openSUSE Leap.
Severity of this bulletin: 2/4.
Creation date: 13/11/2017.
Références of this threat: CVE-2017-12424, DLA-2596-1, openSUSE-SU-2017:2979-1, VIGILANCE-VUL-24411.

Description of the vulnerability 

An attacker can generate a buffer overflow of newusers, in order to trigger a denial of service, and possibly to run code.
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This computer vulnerability alert impacts software or systems such as Debian, openSUSE Leap.

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

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

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

Solutions for this threat 

Debian 9: new shadow packages.
New packages are available:
  Debian 9: shadow 1:4.4-4.1+deb9u1

openSUSE Leap: new shadow packages.
New packages are available:
  openSUSE Leap 42.2: shadow 4.2.1-6.6.1
  openSUSE Leap 42.3: shadow 4.2.1-10.1
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Vigil@nce provides network vulnerability analysis. The Vigil@nce team tracks computer vulnerabilities impacting systems and applications.