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CVE-2019-11328

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Date: May 14, 2019

An issue was discovered in Singularity 3.1.0 to 3.2.0-rc2, a malicious user with local/network access to the host system (e.g. ssh) could exploit this vulnerability due to insecure permissions allowing a user to edit files within `/run/singularity/instances/sing/<user>/<instance>`. The manipulation of those files can change the behavior of the starter-suid program when instances are joined resulting in potential privilege escalation on the host.

Language: Go

Severity Score

Related Resources (14)

https://github.com/sylabs/singularity/commit/618c9d56802399adb329c23ea2b70598eaff4a31
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5O3TPL5OOTIZEI4H6IQBCCISBARJ6WL3/
https://nvd.nist.gov/vuln/detail/CVE-2019-11328
http://www.securityfocus.com/bid/108360
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00059.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LIHV7DSEVTB5SUPEZ2UXGS3Q6WMEQSO2
https://github.com/sylabs/singularity/releases/tag/v3.2.0
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5O3TPL5OOTIZEI4H6IQBCCISBARJ6WL3
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LNU5BUHFOTYUZVHFUSX2VG4S3RCPUEMA
http://www.openwall.com/lists/oss-security/2019/05/16/1
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LIHV7DSEVTB5SUPEZ2UXGS3Q6WMEQSO2/
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00028.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LNU5BUHFOTYUZVHFUSX2VG4S3RCPUEMA/
https://www.mend.io/vulnerability-database/CVE-2019-11328

Severity Score

Weakness Type (CWE)

Permissions, Privileges, and Access Control

CWE-264

Improper Privilege Management

CWE-269

Incorrect Permission Assignment for Critical Resource

CWE-732

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): SINGLE
Confidentiality (C): COMPLETE
Integrity (I): COMPLETE
Availability (A): COMPLETE
Additional information:

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