Race Condition Flaw in alf.io Leads to Unlimited Promo Code Abuse
CVE-2024-45300

5.9MEDIUM

Key Information:

Vendor

Alfio-event

Status
Alf.io
Vendor
CVE Published:
6 September 2024

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.

Affected Version(s)

alf.io < 2.0-M5

References

https://github.com/alfio-event/alf.io/security/advisories...
x_refsource_CONFIRM
https://github.com/alfio-event/alf.io/commit/53b3309e26e8...
x_refsource_MISC

CVSS V3.1

Score:
5.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.