CVE-2021-45915

In LuxSoft LuxCal Web Calendar before 5.2.0, an unauthenticated attacker can manipulate a cookie value

published May 24, 2022

CVSS
โ€”
EPSS
2%
Percentile
75.9
In the wild
Unconfirmed
What it is

๐Ÿšจ An unauthenticated attacker can easily hijack any LuxCal user session, even that of the almighty site admin! ๐Ÿคฏ Think of it like a restaurant where anyone can walk in and claim to be the head chef, serving whatever they want and changing the menu without a second thought. That's what this cookie manipulation allows an attacker to do! If exploited, this vulnerability could lead to complete account takeover, giving the attacker unrestricted access to all user data and administrative functions. Imagine the chaos if a malicious actor were to alter calendar events or access sensitive information โ€“ an absolute nightmare! ๐Ÿ”ฅ

Put simply

Think of it like a restaurant where anyone can walk in and claim to be the head chef, serving whatever they want and changing the menu without a second thought. That's what this cookie manipulation allows an attacker to do! This vulnerability allows unauthenticated attackers to manipulate session cookie values in LuxCal Web Calendar versions prior to 5.2.0, effectively authenticating as any registered user, including administrators.

What to do

If exploited, this vulnerability could lead to complete account takeover, giving the attacker unrestricted access to all user data and administrative functions. Imagine the chaos if a malicious actor were to alter calendar events or access sensitive information โ€“ an absolute nightmare! ๐Ÿ”ฅ To protect your users, immediately upgrade LuxCal Web Calendar to version 5.2.0 or later. Additionally, review your cookie handling practices to ensure they aren't vulnerable to tampering. ๐Ÿ›ก๏ธ You've got this! Follow these steps, and you'll have your LuxCal calendar secure in no time! ๐ŸŒŸ

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01623 ยท 75.9th percentile
Published
2022-05-24T14:32Z
EPSS history
Timeline
  • 24 MAY 14:32Z
    In LuxSoft LuxCal Web Calendar before 5.2.0, an unauthenticated attacker can manipulate a cookie value
    cvelistv5