CVE-2023-30571

Libarchive through 3.6.2 can cause directories to have world-writable permissions. The umask() call inside archive_write_disk_posix.c changes the umask of the whole process for a very short period of time; a race condition with another thread can lead to a permanent umask 0 setting. Such a race condition could lead to implicit directory creation with permissions 0777 (without the sticky bit), which means that any low-privileged local user can delete and rename files inside those directories.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.0 / Impact : 4.2

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/libarchive/libarchive/issues/1876	Issue Tracking
https://groups.google.com/g/libarchive-announce	Release Notes

Configurations

Configuration 1 (hide)

cpe:2.3:a:libarchive:libarchive:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2023-05-29 20:15

Updated : 2023-06-05 16:40

NVD link : CVE-2023-30571

Mitre link : CVE-2023-30571

CVE.ORG link : CVE-2023-30571

JSON object : View

Products Affected

libarchive

libarchive

CWE

CWE-362

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

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5.3 /10