CVE-2019-11503

Published: Apr 24, 2019Modified: Nov 21, 2024

7.5

Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploitability: 3.9 / Impact: 3.6

Source: NVD

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."

Affected (1)

Products: Canonical: Snapd

Canonical

1 product

Snapd

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Canonical Snapd	Before 2.39

Related CWEs

CWE-59

Improper Link Resolution Before File Access ('Link Following')

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

References (10)

http://www.openwall.com/lists/oss-security/2019/04/25/7

Source: cve@mitre.org

Third Party Advisory

https://github.com/snapcore/snapd/pull/6642

Source: cve@mitre.org

Third Party Advisory

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

Source: cve@mitre.org

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VPU6APEZHAA7N2AI57OT4J2P7NKHFOLM/

Source: cve@mitre.org

https://www.openwall.com/lists/oss-security/2019/04/18/4

Source: cve@mitre.org

ExploitMailing ListPatchThird Party Advisory

http://www.openwall.com/lists/oss-security/2019/04/25/7