Upstream information
Description
curl 7.75.0 through 7.76.1 suffers from a use-after-free vulnerability resulting in already freed memory being used when a TLS 1.3 session ticket arrives over a connection. A malicious server can use this in rare unfortunate circumstances to potentially reach remote code execution in the client. When libcurl at run-time sets up support for TLS 1.3 session tickets on a connection using OpenSSL, it stores pointers to the transfer in-memory object for later retrieval when a session ticket arrives. If the connection is used by multiple transfers (like with a reused HTTP/1.1 connection or multiplexed HTTP/2 connection) that first transfer object might be freed before the new session is established on that connection and then the function will access a memory buffer that might be freed. When using that memory, libcurl might even call a function pointer in the object, making it possible for a remote code execution if the server could somehow manage to get crafted memory content into the correct place in memory.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:M/Au:N/C:P/I:P/A:P |
Access Vector | Network |
Access Complexity | Medium |
Authentication | None |
Confidentiality Impact | Partial |
Integrity Impact | Partial |
Availability Impact | Partial |
National Vulnerability Database | |
---|---|
Base Score | 8.1 |
Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
Access Vector | Network |
Access Complexity | High |
Privileges Required | None |
User Interaction | None |
Scope | Unchanged |
Confidentiality Impact | High |
Integrity Impact | High |
Availability Impact | High |
CVSSv3 Version | 3.1 |
List of released packages
Product(s) | Fixed package version(s) | References |
---|---|---|
SUSE Linux Enterprise Desktop 15 SP4 SUSE Linux Enterprise High Performance Computing 15 SP4 SUSE Linux Enterprise Module for Basesystem 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 Basesystem 15 SP4 GA curl-7.79.1-150400.3.1 |
openSUSE Leap 15.4 |
| Patchnames: openSUSE Leap 15.4 GA curl-7.79.1-150400.3.1 |
openSUSE Tumbleweed |
| Patchnames: openSUSE Tumbleweed GA curl-7.79.1-1.1 |
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.
Product(s) | Source package | State |
---|---|---|
HPE Helion OpenStack 8 | curl | Not affected |
SLES15-EC2-CHOST-HVM-BYOS | curl | Not affected |
SLES15-SP1-CHOST-BYOS-Ali | curl | Not affected |
SLES15-SP1-CHOST-BYOS-Azure | curl | Not affected |
SLES15-SP1-CHOST-BYOS-EC2 | curl | Not affected |
SLES15-SP1-CHOST-BYOS-GCE | curl | Not affected |
SLES15-SP1-CHOST-BYOS-OpenStack | curl | Not affected |
SLES15-SP2-CHOST-BYOS-Aliyun | curl | Not affected |
SLES15-SP2-CHOST-BYOS-Azure | curl | Not affected |
SLES15-SP2-CHOST-BYOS-EC2 | curl | Not affected |
SLES15-SP2-CHOST-BYOS-GCE | curl | Not affected |
SLES15-SP2-CHOST-BYOS-OpenStack | curl | Not affected |
SLES15-SP3-CHOST-BYOS-Aliyun | curl | Not affected |
SLES15-SP3-CHOST-BYOS-Azure | curl | Not affected |
SLES15-SP3-CHOST-BYOS-EC2 | curl | Not affected |
SLES15-SP3-CHOST-BYOS-GCE | curl | Not affected |
SLES15-SP4-CHOST-BYOS-Aliyun | curl | Already fixed |
SLES15-SP4-CHOST-BYOS-Azure | curl | Already fixed |
SLES15-SP4-CHOST-BYOS-EC2 | curl | Already fixed |
SLES15-SP4-CHOST-BYOS-GCE | curl | Already fixed |
SUSE CaaS Platform 4.0 | curl | Not affected |
SUSE Enterprise Storage 6 | curl | Not affected |
SUSE Linux Enterprise Desktop 15 SP2 | curl | Not affected |
SUSE Linux Enterprise High Performance Computing 12 SP5 | curl | Not affected |
SUSE Linux Enterprise High Performance Computing 15 LTSS | curl | Not affected |
SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS | curl | Not affected |
SUSE Linux Enterprise High Performance Computing 15 SP2 | curl | Not affected |
SUSE Linux Enterprise Module for Basesystem 15 SP2 | curl | Not affected |
SUSE Linux Enterprise Point of Service 11 SP3 | curl | Not affected |
SUSE Linux Enterprise Server 11 SP4 LTSS | curl | Not affected |
SUSE Linux Enterprise Server 12 SP2 BCL | curl | Not affected |
SUSE Linux Enterprise Server 12 SP3 BCL | curl | Not affected |
SUSE Linux Enterprise Server 12 SP3 ESPOS | curl | Not affected |
SUSE Linux Enterprise Server 12 SP3 LTSS | curl | Not affected |
SUSE Linux Enterprise Server 12 SP4 ESPOS | curl | Not affected |
SUSE Linux Enterprise Server 12 SP4 LTSS | curl | Not affected |
SUSE Linux Enterprise Server 12 SP5 | curl | Not affected |
SUSE Linux Enterprise Server 15 ESPOS | curl | Not affected |
SUSE Linux Enterprise Server 15 LTSS | curl | Not affected |
SUSE Linux Enterprise Server 15 SP1 LTSS | curl | Not affected |
SUSE Linux Enterprise Server 15 SP2 | curl | Not affected |
SUSE Linux Enterprise Server Business Critical Linux 15 SP1 | curl | Not affected |
SUSE Linux Enterprise Server for SAP Applications 12 SP3 | curl | Not affected |
SUSE Linux Enterprise Server for SAP Applications 12 SP4 | curl | Not affected |
SUSE Linux Enterprise Server for SAP Applications 12 SP5 | curl | Not affected |
SUSE Linux Enterprise Server for SAP Applications 15 | curl | Not affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP1 | curl | Not affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP2 | curl | Not affected |
SUSE Linux Enterprise Storage 7 | curl | Not affected |
SUSE Manager Proxy 4.0 | curl | Not affected |
SUSE Manager Proxy 4.1 | curl | Not affected |
SUSE Manager Retail Branch Server 4.0 | curl | Not affected |
SUSE Manager Retail Branch Server 4.1 | curl | Not affected |
SUSE Manager Server 4.0 | curl | Not affected |
SUSE Manager Server 4.1 | curl | Not affected |
SUSE OpenStack Cloud 8 | curl | Not affected |
SUSE OpenStack Cloud 9 | curl | Not affected |
SUSE OpenStack Cloud Crowbar 8 | curl | Not affected |
SUSE OpenStack Cloud Crowbar 9 | curl | Not affected |
bci/python bci/python:3 bci/ruby suse/manager/4.3/proxy-httpd suse/sles/15.4/libguestfs-tools:0.49.0 suse/sles/15.4/virt-handler:0.49.0 | curl | Already fixed |
suse/sle-micro-rancher/5.2 suse/sles/15.3/libguestfs-tools:0.45.0 | curl | Not affected |