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High severity · published Apr 24, 2019
CVE-2019-11503
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…
7.5
CVSS
2.4%
EPSS
No
On KEV
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."
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.4% · higher than 84% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SN
Snapd · Canonical
before 2.39 · source: NVD
Affected product
SN
Snapd
Canonical
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-11503
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-11503
Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/04/25/7
Third Party Advisory
https://github.com/snapcore/snapd/pull/6642
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6VACEKVQ7UAZ32WO4ZKCFW6YOBSYJ76L/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VPU6APEZHAA7N2AI57OT4J2P7NKHFOLM/
Exploit
https://www.openwall.com/lists/oss-security/2019/04/18/4
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