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Remote Denial of Service Vulnerability

High
nibanks published GHSA-fr44-546p-7xcp Oct 10, 2023

Package

nuget Microsoft.Native.Quic.MsQuic.OpenSSL (NuGet)

Affected versions

< 2.2.3

Patched versions

2.2.3
nuget Microsoft.Native.Quic.MsQuic.Schannel (NuGet)
< 2.2.3
2.2.3
libmsquic (packages.microsoft.com)
< 2.2.3
2.2.3

Description

Impact

The MsQuic server will continue to leak memory until no more is available, resulting in a denial of service.

Patches

The following patch was made:

  • Fix Memory Leak from Multiple Decodes of TP - d364fee

Workarounds

Beyond upgrading to the patched versions, there is no other workaround.

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVE ID

CVE-2023-36435

Weaknesses