Upstream information
Description
A missing allocation check in sftp server processing read requests may cause a NULL dereference on low-memory conditions. The malicious client can request up to 4GB SFTP reads, causing allocation of up to 4GB buffers, which was not being checked for failure. This will likely crash the authenticated user's sftp server connection (if implemented as forking as recommended). For thread-based servers, this might also cause DoS for legitimate users.Given this code is not in any released versions, no security releases have been issued.
SUSE information
Overall state of this security issue: Resolved
This issue is currently rated as having low severity.
| National Vulnerability Database | SUSE | |
|---|---|---|
| Base Score | 6.5 | 3.1 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L |
| Attack Vector | Network | Network |
| Attack Complexity | Low | High |
| Privileges Required | Low | Low |
| User Interaction | None | None |
| Scope | Unchanged | Unchanged |
| Confidentiality Impact | None | None |
| Integrity Impact | None | None |
| Availability Impact | High | Low |
| CVSSv3 Version | 3.1 | 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Please note that this evaluation state might be work in progress, incomplete or outdated.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 | libssh | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | libssh | Not affected |
| SUSE Linux Enterprise Micro 5.1 | libssh | Not affected |
| SUSE Linux Enterprise Micro 5.2 | libssh | Not affected |
| SUSE Linux Enterprise Micro 5.3 | libssh | Not affected |
| SUSE Linux Enterprise Micro 5.4 | libssh | Not affected |
| SUSE Linux Enterprise Micro 5.5 | libssh | Not affected |
| SUSE Linux Enterprise Micro 6.0 | libssh | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP5 | libssh | Not affected |
| SUSE Linux Enterprise Server 15 SP5 | libssh | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | libssh | Not affected |
| SUSE Manager Proxy 4.3 | libssh | Not affected |
| SUSE Manager Retail Branch Server 4.3 | libssh | Not affected |
| SUSE Manager Server 4.3 | libssh | Not affected |
| openSUSE Leap 15.5 | libssh | Not affected |
| openSUSE Leap Micro 5.5 | libssh | Not affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise Desktop 15 SP4 | libssh | Not affected |
| SUSE Linux Enterprise High Performance Computing 12 SP5 | libssh | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2 | libssh | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | libssh | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | libssh | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3 | libssh | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | libssh | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | libssh | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4 | libssh | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | libssh | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | libssh | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP2 | libssh | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP3 | libssh | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP4 | libssh | Not affected |
| SUSE Linux Enterprise Server 12 SP5 | libssh | Not affected |
| SUSE Linux Enterprise Server 12 SP5-LTSS | libssh | Not affected |
| SUSE Linux Enterprise Server 15 SP2 | libssh | Not affected |
| SUSE Linux Enterprise Server 15 SP2-LTSS | libssh | Not affected |
| SUSE Linux Enterprise Server 15 SP3 | libssh | Not affected |
| SUSE Linux Enterprise Server 15 SP3-LTSS | libssh | Not affected |
| SUSE Linux Enterprise Server 15 SP4 | libssh | Not affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | libssh | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | libssh | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | libssh | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | libssh | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | libssh | Not affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE CaaS Platform 4.0 | libssh | Not affected |
| SUSE Enterprise Storage 6 | libssh | Not affected |
| SUSE Enterprise Storage 7 | libssh | Not affected |
| SUSE Enterprise Storage 7.1 | libssh | Not affected |
| SUSE Linux Enterprise Desktop 12 | libssh | Not affected |
| SUSE Linux Enterprise Desktop 12 SP1 | libssh | Not affected |
| SUSE Linux Enterprise Desktop 12 SP2 | libssh | Not affected |
| SUSE Linux Enterprise Desktop 12 SP3 | libssh | Not affected |
| SUSE Linux Enterprise Desktop 12 SP4 | libssh | Not affected |
| SUSE Linux Enterprise Desktop 15 | libssh | Not affected |
| SUSE Linux Enterprise Desktop 15 SP1 | libssh | Not affected |
| SUSE Linux Enterprise Desktop 15 SP2 | libssh | Not affected |
| SUSE Linux Enterprise Desktop 15 SP3 | libssh | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 | libssh | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1 | libssh | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | libssh | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | libssh | Not affected |
| SUSE Linux Enterprise High Performance Computing 15-ESPOS | libssh | Not affected |
| SUSE Linux Enterprise High Performance Computing 15-LTSS | libssh | Not affected |
| SUSE Linux Enterprise Micro 5.0 | libssh | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 | libssh | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP1 | libssh | Not affected |
| SUSE Linux Enterprise Real Time 15 SP2 | libssh | Not affected |
| SUSE Linux Enterprise Real Time 15 SP3 | libssh | Not affected |
| SUSE Linux Enterprise Real Time 15 SP4 | libssh | Not affected |
| SUSE Linux Enterprise Server 12 | libssh | Not affected |
| SUSE Linux Enterprise Server 12 SP1 | libssh | Not affected |
| SUSE Linux Enterprise Server 12 SP2 | libssh | Not affected |
| SUSE Linux Enterprise Server 12 SP3 | libssh | Not affected |
| SUSE Linux Enterprise Server 12 SP4 | libssh | Not affected |
| SUSE Linux Enterprise Server 12 SP4-ESPOS | libssh | Not affected |
| SUSE Linux Enterprise Server 12 SP4-LTSS | libssh | Not affected |
| SUSE Linux Enterprise Server 15 | libssh | Not affected |
| SUSE Linux Enterprise Server 15 SP1 | libssh | Not affected |
| SUSE Linux Enterprise Server 15 SP1-BCL | libssh | Not affected |
| SUSE Linux Enterprise Server 15 SP1-LTSS | libssh | Not affected |
| SUSE Linux Enterprise Server 15 SP2-BCL | libssh | Not affected |
| SUSE Linux Enterprise Server 15 SP3-BCL | libssh | Not affected |
| SUSE Linux Enterprise Server 15-LTSS | libssh | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 | libssh | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP1 | libssh | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP2 | libssh | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | libssh | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP4 | libssh | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 | libssh | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | libssh | Not affected |
| SUSE Linux Enterprise Software Development Kit 12 | libssh | Not affected |
| SUSE Linux Enterprise Software Development Kit 12 SP1 | libssh | Not affected |
| SUSE Linux Enterprise Software Development Kit 12 SP2 | libssh | Not affected |
| SUSE Linux Enterprise Software Development Kit 12 SP3 | libssh | Not affected |
| SUSE Linux Enterprise Software Development Kit 12 SP4 | libssh | Not affected |
| SUSE Linux Enterprise Software Development Kit 12 SP5 | libssh | Not affected |
| SUSE Linux Enterprise Workstation Extension 12 | libssh | Not affected |
| SUSE Linux Enterprise Workstation Extension 12 SP1 | libssh | Not affected |
| SUSE Linux Enterprise Workstation Extension 12 SP2 | libssh | Not affected |
| SUSE Linux Enterprise Workstation Extension 12 SP3 | libssh | Not affected |
| SUSE Manager Proxy 4.0 | libssh | Not affected |
| SUSE Manager Proxy 4.1 | libssh | Not affected |
| SUSE Manager Proxy 4.2 | libssh | Not affected |
| SUSE Manager Retail Branch Server 4.0 | libssh | Not affected |
| SUSE Manager Retail Branch Server 4.1 | libssh | Not affected |
| SUSE Manager Retail Branch Server 4.2 | libssh | Not affected |
| SUSE Manager Server 4.0 | libssh | Not affected |
| SUSE Manager Server 4.1 | libssh | Not affected |
| SUSE Manager Server 4.2 | libssh | Not affected |
| SUSE OpenStack Cloud 9 | libssh | Not affected |
| SUSE OpenStack Cloud Crowbar 9 | libssh | Not affected |
| openSUSE Leap 15.3 | libssh | Not affected |
| openSUSE Leap 15.4 | libssh | Not affected |
| openSUSE Leap Micro 5.2 | libssh | Not affected |
| openSUSE Leap Micro 5.3 | libssh | Not affected |
| openSUSE Leap Micro 5.4 | libssh | Not affected |
| Products at an unknown state of their lifecycle. | ||
| SUSE Linux Enterprise Server LTSS Extended Security 12-SP5 | libssh | Not affected |
SUSE Timeline for this CVE
CVE page created: Mon Jul 10 20:48:17 2023CVE page last modified: Tue Nov 12 19:39:26 2024