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MitreCVE-2019-11503

HistoryApr 24, 2019 - 9:29 p.m.

CVE-2019-11503

2019-04-2421:29:00

CWE-59

mitre

web.nvd.nist.gov

cve-2019-11503

snap-confine

snapd

symlink race

cwd restore

permission bypass

nvd

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

EPSS

0.003

Percentile

69.7%

JSON

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 configurations

Nvd

Node

canonicalsnapdRange<2.39

VendorProductVersionCPE
canonicalsnapd*cpe:2.3:a:canonical:snapd:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
canonical	snapd	*	cpe:2.3:a:canonical:snapd::::::::

References

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

github.com/snapcore/snapd/pull/6642

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

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

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

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

EPSS

0.003

Percentile

69.7%

JSON

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