Upstream information
Description
An issue was discovered in HAProxy before 1.8.8. The incoming H2 frame length was checked against the max_frame_size setting instead of being checked against the bufsize. The max_frame_size only applies to outgoing traffic and not to incoming, so if a large enough frame size is advertised in the SETTINGS frame, a wrapped frame will be defragmented into a temporary allocated buffer where the second fragment may overflow the heap by up to 16 kB. It is very unlikely that this can be exploited for code execution given that buffers are very short lived and their addresses not realistically predictable in production, but the likelihood of an immediate crash is absolutely certain.SUSE information
Overall state of this security issue: Does not affect SUSE products
This issue is currently rated as having important severity.
| National Vulnerability Database | |
|---|---|
| Base Score | 5 |
| Vector | AV:N/AC:L/Au:N/C:N/I:N/A:P |
| Access Vector | Network |
| Access Complexity | Low |
| Authentication | None |
| Confidentiality Impact | None |
| Integrity Impact | None |
| Availability Impact | Partial |
| National Vulnerability Database | |
|---|---|
| Base Score | 7.5 |
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality Impact | None |
| Integrity Impact | None |
| Availability Impact | High |
| CVSSv3 Version | 3 |
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Please note that this evaluation state might be work in progress, incomplete or outdated.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 High Availability Extension 12 SP5 | haproxy | Analysis |
| SUSE Linux Enterprise High Availability Extension 15 SP5 | haproxy | Analysis |
| SUSE Linux Enterprise Micro 5.3 | haproxy | Analysis |
| SUSE Linux Enterprise Micro 5.4 | haproxy | Analysis |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | haproxy | Analysis |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Availability Extension 15 SP2 | haproxy | Analysis |
| SUSE Linux Enterprise High Availability Extension 15 SP3 | haproxy | Analysis |
| SUSE Linux Enterprise High Availability Extension 15 SP4 | haproxy | Analysis |
| Products past their end of life and not receiving proactive updates anymore. | ||
| HPE Helion OpenStack 8 | haproxy | Unsupported |
| SUSE Linux Enterprise High Availability Extension 12 SP2 | haproxy | Unsupported |
| SUSE Linux Enterprise High Availability Extension 12 SP3 | haproxy | Unsupported |
| SUSE Linux Enterprise High Availability Extension 12 SP4 | haproxy | Unsupported |
| SUSE Linux Enterprise High Availability Extension 15 SP1 | haproxy | Unsupported |
| SUSE Linux Enterprise Server for SAP Applications 12 SP4 | haproxy | Unsupported |
| SUSE OpenStack Cloud 7 | haproxy | Unsupported |
| SUSE OpenStack Cloud 8 | haproxy | Unsupported |
| SUSE OpenStack Cloud 9 | haproxy | Unsupported |
| SUSE OpenStack Cloud Crowbar 8 | haproxy | Unsupported |
| SUSE OpenStack Cloud Crowbar 9 | haproxy | Unsupported |
SUSE Timeline for this CVE
CVE page created: Wed May 9 13:24:17 2018CVE page last modified: Sat Oct 12 15:27:10 2024