CVE-2016-1000032 : TGCaptcha2 version 0.3.0 is vulnerable to a replay attack due to a missing nonce

TGCaptcha2 version 0.3.0 is vulnerable to a replay attack due to a missing nonce allowing attackers to use a single solved CAPTCHA multiple times.

Published 2016-10-25 14:29:02

Updated 2025-04-12 10:46:41

Source MITRE

View at NVD, CVE.org

Products affected by CVE-2016-1000032

Python » Tgcaptcha2 » Version: 0.3.0
cpe:2.3:a:python:tgcaptcha2:0.3.0:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.58%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 66 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:P/A:N	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: Partial Availability Impact: None
7.5	HIGH	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: High Availability: None

CWE-284 Improper Access Control

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Assigned by: nvd@nist.gov (Primary)

https://patrick.uiterwijk.org/2016/03/09/fedora-spam-dwf-2016-89000/

Fedora wiki and trac spam and first DWF — Patrick Uiterwijk
Technical Description;Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1316083

1316083 – (DWF-2016-89000) tgcaptcha does not have any prevention against replay attacks
Issue Tracking;Third Party Advisory;VDB Entry

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