CVE-2019-18837

High

Description

An issue was discovered in crun before 0.10.5. With a crafted image, it doesn't correctly check whether a target is a symlink, resulting in access to files outside of the container. This occurs in libcrun/linux.c and libcrun/chroot_realpath.c.

SeverityHigh
CVSS8.6
Exploit probability73. percentile1.4%
ProductCrun
PublishedNov 13, 2019
First seenNov 13, 2019

How to fix

Update
  • crun_project crun0.10.5 or later

Affected products

ProductAffected versionsFixed in
crun_project crunv < 0.10.50.10.5
fedoraproject fedora30, 31—

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