CVE Vulnerability

CVE-2022-21688

OnionShare is an open source tool that lets you securely and anonymously share files, host websites, and chat with friends using the Tor network. Affected versions of the desktop application were found to be vulnerable to denial of service via an undisclosed vulnerability in the QT image parsing. Roughly 20 bytes lead to 2GB memory consumption and this can be triggered multiple times. To be abused, this vulnerability requires rendering in the history tab, so some user interaction is required. An adversary with knowledge of the Onion service address in public mode or with authentication in private mode can perform a Denial of Service attack, which quickly results in out-of-memory for the server. This requires the desktop application with rendered history, therefore the impact is only elevated. This issue has been patched in version 2.5.

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Scope

5.5 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/onionshare/onionshare/releases/tag/v2.5 Release Notes Third Party Advisory
https://github.com/onionshare/onionshare/security/advisories/GHSA-x7wr-283h-5h2v Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:onionshare:onionshare:*:*:*:*:*:*:*:*
Information

Published : 2022-01-18 10:15

Updated : 2022-01-25 08:27

NVD link : CVE-2022-21688

Mitre link : CVE-2022-21688

Products Affected
No products.
CWE
CWE-125

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