Multiple Linux Distributions CVE-2019-14899 Security Bypass Vulnerability



Date Discovered

December 4, 2019


Multiple Linux Distributions are prone to a security-bypass vulnerability. Attackers can exploit this issue to bypass certain security restrictions and perform unauthorized actions. This may aid in further attacks.

Technologies Affected

  • Apple iOS
  • Apple macOS
  • Archlinux Linux 2019.05
  • Debian Linux 10.2
  • Fedoraproject Fedora
  • FreeBSD FreeBSD
  • Google Android
  • Linux kernel
  • Manjaro Manjaro Linux 18.1.1
  • OpenBSD OpenBSD -Current
  • Slackware Slackware Linux 14.2
  • Ubuntu Ubuntu Linux 19.10


Block external access at the network boundary, unless external parties require service.
If global access isn't needed, filter access to the affected computer at the network boundary. Restricting access to only trusted computers and networks might greatly reduce the likelihood of a successful exploit.

Run all software as a nonprivileged user with minimal access rights.
To reduce the impact of latent vulnerabilities, always run nonadministrative software as an unprivileged user with minimal access rights.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to detect and block attacks and anomalous activity such as requests containing suspicious URI sequences. Since the webserver may log such requests, review its logs regularly.

Currently, we are not aware of any vendor-supplied patches. If you feel we are in error or are aware of more recent information, please mail us at:



William J. Tolley, Beau Kujath and Jedidiah R. Crandall.

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