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CVE-2021-27216

Date: May 5, 2021

Exim 4 before 4.94.2 has Execution with Unnecessary Privileges. By leveraging a delete_pid_file race condition, a local user can delete arbitrary files as root. This involves the -oP and -oPX options.

Language: C

Severity Score

Related Resources (6)

https://security.alpinelinux.org/vuln/CVE-2021-27216
https://nvd.nist.gov/vuln/detail/CVE-2021-27216
https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28007-LFDIR.txt
https://security-tracker.debian.org/tracker/CVE-2021-27216
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-27216
https://www.mend.io/vulnerability-database/CVE-2021-27216

Severity Score

Weakness Type (CWE)

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CWE-362

Improper Privilege Management

CWE-269

CVSS v3.1

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

CVSS v2

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

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