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Vulnerability of Vim: use after free via Source File

Synthesis of the vulnerability 

An attacker can force the usage of a freed memory area via Source File of Vim, in order to trigger a denial of service, and possibly to run code.
Vulnerable systems: Debian, Solaris, Ubuntu.
Severity of this threat: 2/4.
Creation date: 19/07/2017.
Références of this weakness: bulletinjul2018, CVE-2017-11109, DLA-1030-1, DLA-1871-1, USN-4309-1, VIGILANCE-VUL-23276.

Description of the vulnerability 

An attacker can force the usage of a freed memory area via Source File of Vim, in order to trigger a denial of service, and possibly to run code.
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This vulnerability alert impacts software or systems such as Debian, Solaris, Ubuntu.

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

Solutions for this threat 

Debian 7: new vim packages.
New packages are available:
  Debian 7: vim 2:7.3.547-7+deb7u4

Debian 8: new vim packages.
New packages are available:
  Debian 8: vim 2:7.4.488-7+deb8u4

Oracle Solaris: patch for third party software of July 2018 v3.
A patch is available:
  https://support.oracle.com/rs?type=doc&id=1448883.1

Ubuntu: new vim packages (24/03/2020).
New packages are available:
  Ubuntu 19.10: vim 2:8.1.0875-5ubuntu2.1
  Ubuntu 18.04 LTS: vim 2:8.0.1453-1ubuntu1.3
  Ubuntu 16.04 LTS: vim 2:7.4.1689-3ubuntu1.4
  Ubuntu 14.04 ESM: vim 2:7.4.052-1ubuntu3.1+esm1
  Ubuntu 12.04 ESM: vim 2:7.3.429-2ubuntu2.3
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