PT-2016-4496 · Unknown · Tgcaptcha2

Patrick Uiterwijk · Published 2016-10-25 · Updated 2017-01-19 · CVE-2016-1000032

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Name of the Vulnerable Software and Affected Versions TGCaptcha2 version 0.3.0

Description The issue is related to a missing nonce, which enables attackers to reuse a single solved CAPTCHA multiple times, effectively bypassing the CAPTCHA's security mechanism.

Recommendations For TGCaptcha2 version 0.3.0, consider implementing a nonce to prevent replay attacks until a patch is available. As a temporary workaround, restrict the use of the CAPTCHA mechanism to minimize the risk of exploitation.

Fix

Improper Access Control

Weakness Enumeration

CWE-284

Related Identifiers

CVE-2016-1000032

Affected Products

Tgcaptcha2

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2016-1000032 · Security Note
• https://osv.dev/vulnerability/CVE-2016-1000032 · Vendor Advisory
• https://patrick.uiterwijk.org/2016/03/09/fedora-spam-dwf-2016-89000 · Note
• https://bugzilla.redhat.com/show_bug.cgi?id=1316083 · Note