CVE-2019-11503

High

Description

snap-confine as included in snapd before 2.39 did not guard against symlink races when performing the chdir() to the current working directory of the calling user, aka a "cwd restore permission bypass."

SeverityHigh

CVSS7.5

Exploit probability—

ProductCanonical Snapd

PublishedApr 24, 2019

First seenApr 24, 2019

How to fix

Update

canonical snapd2.39 or later

Vendor advisories

lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6VACEKVQ7UAZ32WO4ZKCFW6YOBSYJ76L/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VPU6APEZHAA7N2AI57OT4J2P7NKHFOLM/

Affected products

Product	Affected versions	Fixed in
canonical snapd	v < 2.39	2.39

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