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Amazon Linux AMI: CVE-2018-19044: Security patch for keepalived (ALAS-2020-1414)

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Amazon Linux AMI: CVE-2018-19044: Security patch for keepalived (ALAS-2020-1414)

Severity
3
CVSS
(AV:L/AC:M/Au:N/C:N/I:P/A:P)
Published
11/08/2018
Created
08/15/2020
Added
08/13/2020
Modified
08/13/2020

Description

keepalived 2.0.8 didn't check for pathnames with symlinks when writing data to a temporary file upon a call to PrintData or PrintStats. This allowed local users to overwrite arbitrary files if fs.protected_symlinks is set to 0, as demonstrated by a symlink from /tmp/keepalived.data or /tmp/keepalived.stats to /etc/passwd.

Solution(s)

  • amazon-linux-upgrade-keepalived

References

  • ALAS-2020-1414
  • CVE-2018-19044

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