CVE-2023-0744

published 2023-02-08

CVE-2023-0744: Improper Access Control in GitHub repository answerdev/answer prior to 1.0.4.

Priority P2 64 critical 9.8 CVSS 3.1

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

EXPLOIT

Improper Access Control in GitHub repository answerdev/answer prior to 1.0.4.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
answer	answer	< 1.0.4	1.0.4
answerdev	answerdev_answer	>= unspecified < 1.0.4	1.0.4
github.com	answerdev_answer	>= 0 < 1.0.4	1.0.4

Detection & IOCs extracted from sources · hover to see the quote

url answer/api/v1/user/password/reset↗

url users/password-reset?code=↗

version answerdev/answer < 1.0.4↗

• → Monitor for unauthenticated POST requests to the password reset API endpoint `answer/api/v1/user/password/reset` — the exploit directly calls this endpoint with only an email address (`{"e_mail": email}`) to retrieve a valid password reset code, enabling account takeover without user interaction. ↗
• → Alert on API responses from `answer/api/v1/user/password/reset` that return a reset code directly in the JSON `data` field to an unauthenticated caller — this is the improper access control condition being exploited. ↗
• → Detect rapid or scripted sequences of POST to `answer/api/v1/user/password/reset` followed immediately by GET to `users/password-reset?code=` — this two-step pattern is the full account takeover flow. ↗

• · The exploit disables TLS certificate verification (`verify=False`), meaning the attack may be conducted over HTTPS against self-signed or misconfigured certificates. TLS inspection or certificate pinning will not prevent exploitation. ↗
• · Affected versions are strictly prior to 1.0.4; instances running 1.0.3 or earlier are vulnerable. Ensure version detection rules target this range. ↗

CVSS provenance

nvd v3.1 9.8 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd v3.0 9.8 CRITICAL CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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CWE-284