CVE-2004-2154

CUPS before 1.1.21rc1 treats a Location directive in cupsd.conf as case sensitive, which allows attackers to bypass intended ACLs via a printer name containing…

Critical · published July 5, 2005

CVSS v3.1
9.8
EPSS
2%
Percentile
81.2
In the wild
Unconfirmed
What it is

🔥 A sneaky case sensitivity flaw in CUPS could let attackers stroll right past ACLs like they own the place! Think of it as a restaurant that only checks the spelling of a reservation name, allowing anyone with a cleverly altered name to walk right in and sit where they please. If the name is even slightly different, they’ll think you're fine and dandy! This vulnerability is absolutely devastating because it allows attackers to bypass access controls, potentially leading to unauthorized access to sensitive print jobs or printer configurations. An attacker could manipulate the printer name just right, opening the door to a world of chaos and misuse.

Put simply

Think of it as a restaurant that only checks the spelling of a reservation name, allowing anyone with a cleverly altered name to walk right in and sit where they please. If the name is even slightly different, they’ll think you're fine and dandy! The flaw in CUPS before version 1.1.21rc1 arises from treating the Location directive in cupsd.conf as case sensitive, meaning attackers can exploit this by using different cases in printer names to evade access controls.

What to do

This vulnerability is absolutely devastating because it allows attackers to bypass access controls, potentially leading to unauthorized access to sensitive print jobs or printer configurations. An attacker could manipulate the printer name just right, opening the door to a world of chaos and misuse. Update CUPS to version 1.1.21rc1 or later immediately to patch this vulnerability. Additionally, review your configuration files to ensure that proper case usage is maintained and consider implementing further access controls to safeguard sensitive print jobs. You've got this! By following these steps, you’ll lock down your CUPS setup and keep the attackers out! 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.02072 · 81.2th percentile
Published
2005-07-05T04:00Z
EPSS history
Timeline
  • 05 JUL 04:00Z
    CUPS before 1.1.21rc1 treats a Location directive in cupsd.conf as case sensitive, which allows attackers to bypass intended ACLs via a printer name containing…
    cvelistv5