Upstream information
Description
Waitress version 1.4.2 allows a DOS attack When waitress receives a header that contains invalid characters. When a header like "Bad-header: xxxxxxxxxxxxxxx\x10" is received, it will cause the regular expression engine to catastrophically backtrack causing the process to use 100% CPU time and blocking any other interactions. This allows an attacker to send a single request with an invalid header and take the service offline. This issue was introduced in version 1.4.2 when the regular expression was updated to attempt to match the behaviour required by errata associated with RFC7230. The regular expression that is used to validate incoming headers has been updated in version 1.4.3, it is recommended that people upgrade to the new version of Waitress as soon as possible.SUSE information
Overall state of this security issue: Resolved
This issue is currently rated as having moderate severity.
| National Vulnerability Database | |
|---|---|
| Base Score | 6.8 |
| Vector | AV:N/AC:L/Au:S/C:N/I:N/A:C |
| Access Vector | Network |
| Access Complexity | Low |
| Authentication | Single |
| Confidentiality Impact | None |
| Integrity Impact | None |
| Availability Impact | Complete |
| National Vulnerability Database | |
|---|---|
| Base Score | 6.5 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | Low |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality Impact | None |
| Integrity Impact | None |
| Availability Impact | High |
| CVSSv3 Version | 3.1 |
Status of this issue by product and package
Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.
| Product(s) | Source package | State |
|---|---|---|
| Products under general support and receiving all security fixes. | ||
| SUSE Linux Enterprise Desktop 15 SP5 | python-waitress | Not affected |
| SUSE Linux Enterprise Desktop 15 SP6 | python-waitress | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | python-waitress | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | python-waitress | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | python-waitress | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP6 | python-waitress | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP5 | python-waitress | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP6 | python-waitress | Not affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP5 | python-waitress | Not affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP6 | python-waitress | Not affected |
| SUSE Linux Enterprise Server 15 SP5 | python-waitress | Not affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | python-waitress | Not affected |
| SUSE Linux Enterprise Server 15 SP6 | python-waitress | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | python-waitress | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | python-waitress | Not affected |
| SUSE Manager Proxy 4.3 | python-waitress | Not affected |
| SUSE Manager Retail Branch Server 4.3 | python-waitress | Not affected |
| SUSE Manager Server 4.3 | python-waitress | Not affected |
| openSUSE Leap 15.5 | python-waitress | Not affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise Desktop 15 SP4 | python-waitress | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2 | python-waitress | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | python-waitress | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | python-waitress | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3 | python-waitress | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | python-waitress | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | python-waitress | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4 | python-waitress | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | python-waitress | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | python-waitress | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP2 | python-waitress | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP3 | python-waitress | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP4 | python-waitress | Not affected |
| SUSE Linux Enterprise Server 15 SP2 | python-waitress | Not affected |
| SUSE Linux Enterprise Server 15 SP2-LTSS | python-waitress | Not affected |
| SUSE Linux Enterprise Server 15 SP3 | python-waitress | Not affected |
| SUSE Linux Enterprise Server 15 SP3-LTSS | python-waitress | Not affected |
| SUSE Linux Enterprise Server 15 SP4 | python-waitress | Not affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | python-waitress | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | python-waitress | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | python-waitress | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | python-waitress | Not affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| HPE Helion OpenStack 8 | python-waitress | Not affected |
| HPE Helion OpenStack Cloud 8 | python-waitress | Not affected |
| SUSE CaaS Platform 4.0 | python-waitress | Not affected |
| SUSE Enterprise Storage 5 | python-waitress | Not affected |
| SUSE Enterprise Storage 6 | python-waitress | Not affected |
| SUSE Enterprise Storage 7 | python-waitress | Not affected |
| SUSE Enterprise Storage 7.1 | python-waitress | Not affected |
| SUSE Linux Enterprise Desktop 15 | python-waitress | Not affected |
| SUSE Linux Enterprise Desktop 15 SP1 | python-waitress | Not affected |
| SUSE Linux Enterprise Desktop 15 SP2 | python-waitress | Not affected |
| SUSE Linux Enterprise Desktop 15 SP3 | python-waitress | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 | python-waitress | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1 | python-waitress | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | python-waitress | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | python-waitress | Not affected |
| SUSE Linux Enterprise High Performance Computing 15-ESPOS | python-waitress | Not affected |
| SUSE Linux Enterprise High Performance Computing 15-LTSS | python-waitress | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 | python-waitress | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP1 | python-waitress | Not affected |
| SUSE Linux Enterprise Module for Package Hub 15 | python-waitress | Not affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP1 | python-waitress | Not affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP2 | python-waitress | Not affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP3 | python-waitress | Not affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP4 | python-waitress | Not affected |
| SUSE Linux Enterprise Real Time 15 SP2 | python-waitress | Not affected |
| SUSE Linux Enterprise Real Time 15 SP3 | python-waitress | Not affected |
| SUSE Linux Enterprise Real Time 15 SP4 | python-waitress | Not affected |
| SUSE Linux Enterprise Server 15 | python-waitress | Not affected |
| SUSE Linux Enterprise Server 15 SP1 | python-waitress | Not affected |
| SUSE Linux Enterprise Server 15 SP1-BCL | python-waitress | Not affected |
| SUSE Linux Enterprise Server 15 SP1-LTSS | python-waitress | Not affected |
| SUSE Linux Enterprise Server 15 SP2-BCL | python-waitress | Not affected |
| SUSE Linux Enterprise Server 15 SP3-BCL | python-waitress | Not affected |
| SUSE Linux Enterprise Server 15-LTSS | python-waitress | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 | python-waitress | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | python-waitress | Not affected |
| SUSE Manager Proxy 4.0 | python-waitress | Not affected |
| SUSE Manager Proxy 4.1 | python-waitress | Not affected |
| SUSE Manager Proxy 4.2 | python-waitress | Not affected |
| SUSE Manager Retail Branch Server 4.0 | python-waitress | Not affected |
| SUSE Manager Retail Branch Server 4.1 | python-waitress | Not affected |
| SUSE Manager Retail Branch Server 4.2 | python-waitress | Not affected |
| SUSE Manager Server 4.0 | python-waitress | Not affected |
| SUSE Manager Server 4.1 | python-waitress | Not affected |
| SUSE Manager Server 4.2 | python-waitress | Not affected |
| SUSE OpenStack Cloud 6 | python-waitress | Not affected |
| SUSE OpenStack Cloud 6-LTSS | python-waitress | Not affected |
| SUSE OpenStack Cloud 7 | python-waitress | Not affected |
| SUSE OpenStack Cloud 8 | python-waitress | Not affected |
| SUSE OpenStack Cloud 9 | python-waitress | Not affected |
| SUSE OpenStack Cloud Crowbar 8 | python-waitress | Not affected |
| SUSE OpenStack Cloud Crowbar 9 | python-waitress | Not affected |
| openSUSE Leap 15.3 | python-waitress | Not affected |
| openSUSE Leap 15.4 | python-waitress | Not affected |
SUSE Timeline for this CVE
CVE page created: Tue Feb 4 13:24:37 2020CVE page last modified: Fri Dec 20 23:00:16 2024