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CVE-2020-16127

Good to know:

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Date: November 2, 2020

An Ubuntu-specific modification to AccountsService in versions before 0.6.55-0ubuntu13.2, among other earlier versions, would perform unbounded read operations on user-controlled ~/.pam_environment files, allowing an infinite loop if /dev/zero is symlinked to this location.

Language: C

Severity Score

Related Resources (4)

https://securitylab.github.com/advisories/GHSL-2020-187-accountsservice-drop-privs-DOS
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-16127
https://nvd.nist.gov/vuln/detail/CVE-2020-16127
https://www.mend.io/vulnerability-database/CVE-2020-16127

Severity Score

Weakness Type (CWE)

Input Validation

CWE-20

Loop with Unreachable Exit Condition ('Infinite Loop')

CWE-835

Top Fix

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Upgrade Version

Upgrade to version 0.6.55-0ubuntu13.2

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CVSS v3.1

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

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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