Upstream information

CVE-2020-7663 at MITRE


websocket-extensions ruby module prior to 0.1.5 allows Denial of Service (DoS) via Regex Backtracking. The extension parser may take quadratic time when parsing a header containing an unclosed string parameter value whose content is a repeating two-byte sequence of a backslash and some other character. This could be abused by an attacker to conduct Regex Denial Of Service (ReDoS) on a single-threaded server by providing a malicious payload with the Sec-WebSocket-Extensions header.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having moderate severity.

CVSS v2 Scores
  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
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 7.5 4.3
Attack Vector Network Network
Attack Complexity Low Low
Privileges Required None 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
SUSE Bugzilla entry: 1172445 [NEW]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
Image SLES15-SP1-SAP-Azure-LI-BYOS-Production
Image SLES15-SP1-SAP-Azure-VLI-BYOS-Production
Image SLES15-SP2-SAP-Azure-LI-BYOS-Production
Image SLES15-SP2-SAP-Azure-VLI-BYOS-Production
Image SLES15-SP3-SAP-Azure-LI-BYOS-Production
Image SLES15-SP3-SAP-Azure-VLI-BYOS-Production
Image SLES15-SP4-SAP-Azure-LI-BYOS
Image SLES15-SP4-SAP-Azure-LI-BYOS-Production
Image SLES15-SP4-SAP-Azure-VLI-BYOS-Production
Image SLES15-SP4-SAP-BYOS-Azure
Image SLES15-SP4-SAP-Hardened
Image SLES15-SP4-SAP-Hardened-Azure
Image SLES15-SP4-SAP-Hardened-BYOS
Image SLES15-SP4-SAP-Hardened-BYOS-Azure
Image SLES15-SP4-SAP-Hardened-BYOS-EC2
Image SLES15-SP4-SAP-Hardened-BYOS-GCE
Image SLES15-SP4-SAP-Hardened-EC2
Image SLES15-SP4-SAP-Hardened-GCE
  • ruby2.5-rubygem-websocket-extensions >= 0.1.3-150000.3.4.1
SUSE Linux Enterprise High Availability Extension 15 SP1
  • ruby2.5-rubygem-websocket-extensions >= 0.1.3-150000.3.4.1
SUSE Linux Enterprise High Availability Extension 15 SP2
  • ruby2.5-rubygem-websocket-extensions >= 0.1.3-150000.3.4.1
SUSE Linux Enterprise High Availability Extension 15 SP3
  • ruby2.5-rubygem-websocket-extensions >= 0.1.3-150000.3.4.1
SUSE Linux Enterprise High Availability Extension 15 SP4
  • ruby2.5-rubygem-websocket-extensions >= 0.1.3-150000.3.4.1
openSUSE Leap 15.4
  • ruby2.5-rubygem-websocket-extensions >= 0.1.3-150000.3.4.1
  • ruby2.5-rubygem-websocket-extensions-doc >= 0.1.3-150000.3.4.1
openSUSE Tumbleweed
  • ruby2.7-rubygem-websocket-extensions >= 0.1.5-1.7
  • ruby3.0-rubygem-websocket-extensions >= 0.1.5-1.7
openSUSE Tumbleweed GA ruby2.7-rubygem-websocket-extensions-0.1.5-1.7

First public cloud image revisions this CVE is fixed in:

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 15 SP4 rubygem-websocket-extensions Released
openSUSE Leap 15.4 rubygem-websocket-extensions Released
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise High Availability Extension 15 SP1 rubygem-websocket-extensions Released
SUSE Linux Enterprise High Availability Extension 15 SP2 rubygem-websocket-extensions Released
SUSE Linux Enterprise High Availability Extension 15 SP3 rubygem-websocket-extensions Released
Products past their end of life and not receiving proactive updates anymore.
SUSE Linux Enterprise High Availability Extension 15 rubygem-websocket-extensions Affected

SUSE Timeline for this CVE

CVE page created: Wed Jun 3 00:29:17 2020
CVE page last modified: Sun May 7 00:48:16 2023