CVE-2019-11503 — Vulnetix

CVE-2019-11503 PUBLISHED

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."

EPSS 0.45% · 63.9th percentile

Risk Scores

EPSS Score

0.45%

63.9th percentile

Affected Products

Vendor	Product	Versions
Ubuntu:18.04:LTS	snapd	0, 2.28.5+17.10, 2.29.4.2+18.04
Ubuntu:16.04:LTS	snapd	0, 1.9, 1.9.1.1

Exploit Intelligence

https://www.openwall.com/lists/oss-security/2019/04/18/4 (nist-nvd)
https://github.com/snapcore/snapd/pull/6642 (circl)
[oss-security] 20190425 Re: Security issues in snapcraft snap-confine set*id binary (circl)
FEDORA-2019-b6612c5fe5 (circl)
FEDORA-2019-bc3dfb389f (circl)

Timeline

Apr 24, 2019 CVE Published
Apr 14, 2021 EPSS Score
Jun 23, 2021 EPSS Score
Aug 24, 2021 EPSS Score
Oct 26, 2021 EPSS Score
Jan 6, 2022 EPSS Score
Feb 4, 2022 EPSS Score
Feb 28, 2022 EPSS Score
Apr 1, 2022 EPSS Score
May 1, 2022 EPSS Score
Jul 3, 2022 EPSS Score
Sep 4, 2022 EPSS Score

References

https://ubuntu.com/security/CVE-2019-11503 third-party-advisory
https://github.com/snapcore/snapd/pull/6642 third-party-advisory
https://www.openwall.com/lists/oss-security/2019/04/18/4 third-party-advisory
https://www.cve.org/CVERecord?id=CVE-2019-11503 third-party-advisory

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