Integer Overflow or Wraparound

Affecting libx11 package, versions <2:1.6.7-1+deb10u1

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Overview

Affected versions of this package are vulnerable to Integer Overflow or Wraparound. An integer overflow vulnerability leading to a double-free was found in libX11. This flaw allows a local privileged attacker to cause an application compiled with libX11 to crash, or in some cases, result in arbitrary code execution. The highest threat from this flaw is to confidentiality, integrity as well as system availability.

Remediation

Upgrade libx11 to version or higher.

References

CVSS Score

7.8
high severity
  • Attack Vector
    Local
  • Attack Complexity
    Low
  • Privileges Required
    Low
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    High
  • Integrity
    High
  • Availability
    High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVE
CVE-2020-14363
CWE
CWE-190 CWE-416
Snyk ID
SNYK-DEBIAN10-LIBX11-608548
Disclosed
11 Sep, 2020
Published
26 Aug, 2020