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Vulnerability of LZ4: buffer overflow via LZ4_write32

Synthesis of the vulnerability

An attacker can trigger a buffer overflow via LZ4_write32() of LZ4, in order to trigger a denial of service, and possibly to run code.
Severity of this announce: 2/4.
Creation date: 29/10/2019.
Références of this computer vulnerability: CVE-2019-17543, openSUSE-SU-2019:2398-1, openSUSE-SU-2019:2399-1, VIGILANCE-VUL-30733.

Description of the vulnerability

An attacker can trigger a buffer overflow via LZ4_write32() of LZ4, in order to trigger a denial of service, and possibly to run code.
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This security weakness impacts software or systems such as openSUSE Leap.

Our Vigil@nce team determined that the severity of this threat bulletin 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 threat.

Solutions for this threat

openSUSE Leap 15: new lz4 packages.
New packages are available:
  openSUSE Leap 15.0: lz4 1.8.0-lp150.2.3.1
  openSUSE Leap 15.1: lz4 1.8.0-lp151.3.3.1
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