Upstream information
Description
Redis is an open source, in-memory database that persists on disk. When parsing an incoming Redis Standard Protocol (RESP) request, Redis allocates memory according to user-specified values which determine the number of elements (in the multi-bulk header) and size of each element (in the bulk header). An attacker delivering specially crafted requests over multiple connections can cause the server to allocate significant amount of memory. Because the same parsing mechanism is used to handle authentication requests, this vulnerability can also be exploited by unauthenticated users. The problem is fixed in Redis versions 6.2.6, 6.0.16 and 5.0.14. An additional workaround to mitigate this problem without patching the redis-server executable is to block access to prevent unauthenticated users from connecting to Redis. This can be done in different ways: Using network access control tools like firewalls, iptables, security groups, etc. or Enabling TLS and requiring users to authenticate using client side certificates.SUSE information
Overall state of this security issue: Resolved
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 | SUSE | |
|---|---|---|
| Base Score | 7.5 | 7.5 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Attack Vector | Network | Network |
| Attack Complexity | Low | Low |
| Privileges Required | None | None |
| User Interaction | None | None |
| Scope | Unchanged | Unchanged |
| Confidentiality Impact | None | None |
| Integrity Impact | None | None |
| Availability Impact | High | High |
| CVSSv3 Version | 3.1 | 3.1 |
SUSE Security Advisories:
- SUSE-SU-2021:3772-1, published Tue Nov 23 20:17:52 UTC 2021
- openSUSE-SU-2021:3772-1, published Wed Nov 24 03:43:10 2021
List of released packages
| Product(s) | Fixed package version(s) | References |
|---|---|---|
| SUSE Enterprise Storage 7.1 SUSE Linux Enterprise High Performance Computing 15 SP3 SUSE Linux Enterprise Module for Server Applications 15 SP3 SUSE Linux Enterprise Server 15 SP3 SUSE Linux Enterprise Server for SAP Applications 15 SP3 SUSE Manager Proxy 4.2 SUSE Manager Retail Branch Server 4.2 SUSE Manager Server 4.2 |
| Patchnames: SUSE-SLE-Module-Server-Applications-15-SP3-2021-3772 |
| SUSE Enterprise Storage 7 SUSE Linux Enterprise High Performance Computing 15 SP2 SUSE Linux Enterprise Module for Server Applications 15 SP2 SUSE Linux Enterprise Server 15 SP2 SUSE Linux Enterprise Server for SAP Applications 15 SP2 SUSE Manager Proxy 4.1 SUSE Manager Retail Branch Server 4.1 SUSE Manager Server 4.1 |
| Patchnames: SUSE-SLE-Module-Server-Applications-15-SP2-2021-3772 |
| SUSE Liberty Linux 8 |
| Patchnames: RHSA-2021:3918 RHSA-2021:3945 |
| SUSE Linux Enterprise High Performance Computing 15 SP4 SUSE Linux Enterprise Module for Server Applications 15 SP4 SUSE Linux Enterprise Server 15 SP4 SUSE Linux Enterprise Server for SAP Applications 15 SP4 SUSE Manager Proxy 4.3 SUSE Manager Retail Branch Server 4.3 SUSE Manager Server 4.3 |
| Patchnames: SUSE Linux Enterprise Module for Server Applications 15 SP4 GA redis-6.2.6-150400.1.5 |
| openSUSE Leap 15.3 |
| Patchnames: openSUSE-SLE-15.3-2021-3772 |
| openSUSE Tumbleweed |
| Patchnames: openSUSE-Tumbleweed-2024-11563 |
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 Performance Computing 15 SP5 | redis | Already fixed |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | redis7 | Already fixed |
| SUSE Linux Enterprise Module for Server Applications 15 SP5 | redis | Already fixed |
| SUSE Linux Enterprise Module for Server Applications 15 SP5 | redis7 | Already fixed |
| SUSE Linux Enterprise Server 15 SP5 | redis | Already fixed |
| SUSE Linux Enterprise Server 15 SP5 | redis7 | Already fixed |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | redis | Already fixed |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | redis7 | Already fixed |
| SUSE Manager Proxy 4.3 | redis | Already fixed |
| SUSE Manager Retail Branch Server 4.3 | redis | Already fixed |
| SUSE Manager Server 4.3 | redis | Already fixed |
| openSUSE Leap 15.5 | redis | Already fixed |
| openSUSE Leap 15.5 | redis7 | Already fixed |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Performance Computing 15 SP2 | redis | Released |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | redis | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | redis | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3 | redis | Released |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | redis | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | redis | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4 | redis | Already fixed |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | redis | Already fixed |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | redis | Already fixed |
| SUSE Linux Enterprise Module for Server Applications 15 SP2 | redis | Released |
| SUSE Linux Enterprise Module for Server Applications 15 SP3 | redis | Released |
| SUSE Linux Enterprise Module for Server Applications 15 SP4 | redis | Already fixed |
| SUSE Linux Enterprise Server 15 SP2 | redis | Released |
| SUSE Linux Enterprise Server 15 SP2-LTSS | redis | Affected |
| SUSE Linux Enterprise Server 15 SP3 | redis | Released |
| SUSE Linux Enterprise Server 15 SP3-LTSS | redis | Affected |
| SUSE Linux Enterprise Server 15 SP4 | redis | Already fixed |
| SUSE Linux Enterprise Server 15 SP4-LTSS | redis | Already fixed |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | redis | Released |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | redis | Released |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | redis | Already fixed |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE Enterprise Storage 7 | redis | Released |
| SUSE Enterprise Storage 7.1 | redis | Released |
| SUSE Linux Enterprise Real Time 15 SP2 | redis | Affected |
| SUSE Linux Enterprise Real Time 15 SP3 | redis | Affected |
| SUSE Linux Enterprise Real Time 15 SP4 | redis | Already fixed |
| SUSE Linux Enterprise Server 15 SP2-BCL | redis | Affected |
| SUSE Linux Enterprise Server 15 SP3-BCL | redis | Affected |
| SUSE Manager Proxy 4.1 | redis | Released |
| SUSE Manager Proxy 4.2 | redis | Released |
| SUSE Manager Retail Branch Server 4.1 | redis | Released |
| SUSE Manager Retail Branch Server 4.2 | redis | Released |
| SUSE Manager Server 4.1 | redis | Released |
| SUSE Manager Server 4.2 | redis | Released |
| openSUSE Leap 15.3 | redis | Affected |
| openSUSE Leap 15.4 | redis | Already fixed |
SUSE Timeline for this CVE
CVE page created: Mon Oct 4 23:00:46 2021CVE page last modified: Fri Sep 13 13:14:14 2024