CVE-2024-45300: alf — Exploit & Fix

Description

alf.io is an open source ticket reservation system for conferences, trade shows, workshops, and meetups. Prior to version 2.0-M5, a race condition allows the user to bypass the limit on the number of promo codes and use the discount coupon multiple times. In "alf.io", an event organizer can apply price discounts by using promo codes to your events. The organizer can limit the number of promo codes that will be used for this, but the time-gap between checking the number of codes and restricting the use of the codes allows a threat actor to bypass the promo code limit. Version 2.0-M5 fixes this issue.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-362 CWE-362

Affected Products

Vendor	Product	Versions
alf	alf	< 2.0-m5

References

Advisories & Patches

https://github.com/alfio-event/alf.io/commit/53b3309e26e8acec6860d1e045df3046153a3245 https://github.com/alfio-event/alf.io/security/advisories/GHSA-67jg-m6f3-473g

Exploits

https://github.com/alfio-event/alf.io/security/advisories/GHSA-67jg-m6f3-473g

Frequently Asked Questions

What is CVE-2024-45300? +

alf.io is an open source ticket reservation system for conferences, trade shows, workshops, and meetups. Prior to version 2.0-M5, a race condition allows the user to bypass the limit on the number of promo codes and use the discount coupon multiple times. In "alf.io", an event organizer can apply price discounts by using promo codes to your events. The organizer can limit the number of promo codes that will be used for this, but the time-gap between checking the number of codes and restricting the use of the codes allows a threat actor to bypass the promo code limit. Version 2.0-M5 fixes this issue. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2024-45300? +

CVE-2024-45300 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-45300? +

CVE-2024-45300 affects products from alf, specifically: alf. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-45300? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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