CUPS cups-browsed before 2.5b1 will send an HTTP POST request to an arbitrary destination and port in response to a single IPP UDP packet requesting a printer to be added, a different vulnerability than CVE-2024-47176. (The request is meant to probe the new printer but can be used to create DDoS amplification attacks.)
Weakness
The product does not properly control the allocation and maintenance of a limited resource.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Red Hat Enterprise Linux 7.7 Advanced Update Support | RedHat | cups-filters-0:1.0.35-26.el7_7.3 | * |
| Red Hat Enterprise Linux 7 Extended Lifecycle Support | RedHat | cups-filters-0:1.0.35-29.el7_9.3 | * |
| Red Hat Enterprise Linux 8 | RedHat | cups-filters-0:1.20.0-35.el8_10 | * |
| Red Hat Enterprise Linux 8.2 Advanced Update Support | RedHat | cups-filters-0:1.20.0-19.el8_2.2 | * |
| Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | RedHat | cups-filters-0:1.20.0-24.el8_4.2 | * |
| Red Hat Enterprise Linux 8.4 Telecommunications Update Service | RedHat | cups-filters-0:1.20.0-24.el8_4.2 | * |
| Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions | RedHat | cups-filters-0:1.20.0-24.el8_4.2 | * |
| Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | RedHat | cups-filters-0:1.20.0-27.el8_6.3 | * |
| Red Hat Enterprise Linux 8.6 Telecommunications Update Service | RedHat | cups-filters-0:1.20.0-27.el8_6.3 | * |
| Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions | RedHat | cups-filters-0:1.20.0-27.el8_6.3 | * |
| Red Hat Enterprise Linux 8.8 Extended Update Support | RedHat | cups-filters-0:1.20.0-29.el8_8.3 | * |
| Red Hat Enterprise Linux 9 | RedHat | cups-filters-0:1.28.7-17.el9_4 | * |
| Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions | RedHat | cups-filters-0:1.28.7-10.el9_0.2 | * |
| Red Hat Enterprise Linux 9.2 Extended Update Support | RedHat | cups-filters-0:1.28.7-11.el9_2.2 | * |
| Cups-browsed | Ubuntu | devel | * |
| Cups-browsed | Ubuntu | noble | * |
| Cups-filters | Ubuntu | esm-infra/bionic | * |
| Cups-filters | Ubuntu | esm-infra/focal | * |
| Cups-filters | Ubuntu | esm-infra/xenial | * |
| Cups-filters | Ubuntu | focal | * |
| Cups-filters | Ubuntu | jammy | * |
Potential Mitigations
Mitigation of resource exhaustion attacks requires that the target system either:
The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question.
The second solution is simply difficult to effectively institute – and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/147.html
- https://cwe.mitre.org/data/definitions/227.html
- https://cwe.mitre.org/data/definitions/492.html
References
- https://github.com/OpenPrinting/cups
- https://github.com/OpenPrinting/cups-filters/security/advisories/GHSA-rq86-c7g6-r2h8
- https://www.akamai.com/blog/security-research/october-cups-ddos-threat
- http://www.openwall.com/lists/oss-security/2024/10/04/1
- https://security.netapp.com/advisory/ntap-20241011-0002/