Vulnerability · Published Sep 6, 2024 · Assigned by GitHub_M
CVE-2024-45300Bypassing promo code limitations with race conditions
High 7.5
In plain English
A high-severity race condition in alf.io from alfio-event. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| alfio-event | alf.io | < 2.0-M5 |
Weakness: CWE-362 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H