Bug ID 541622: APD/APMD Crashes While Verifying CAPTCHA

Last Modified: Apr 28, 2025

Affected Product(s):
BIG-IP ASM(all modules)

Known Affected Versions:
11.3.0, 11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.1 HF10, 11.5.1 HF11, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 11.5.4, 11.5.4 HF1, 11.5.4 HF2, 11.5.4 HF3, 11.5.4 HF4, 11.5.5, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8, 11.6.1, 12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4

Fixed In:
12.1.0, 11.6.1 HF1, 11.5.6

Opened: Aug 25, 2015

Severity: 3-Major

Symptoms

APD (pre v12.0.0) or APMD (v12.0.0) crashes in libcurl function when verifying CAPTCHA

Impact

Authentication service will be disrupted until APD/APMD is up again.

Conditions

This issue shows up when multiple sessions are being verified for CAPTCHA at SimpleLogonPageAgent.

Workaround

None

Fix Information

Create one cURL session for each user session that requires CAPTCHA verification

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips