CVE-2023-51714

Publication date 24 December 2023

Last updated 9 March 2026

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

9.8 · Critical

Score breakdown

Description

An issue was discovered in the HTTP2 implementation in Qt before 5.15.17, 6.x before 6.2.11, 6.3.x through 6.5.x before 6.5.4, and 6.6.x before 6.6.2. network/access/http2/hpacktable.cpp has an incorrect HPack integer overflow check.

Status

Package Ubuntu Release Status
qt6-base 25.10 questing
Not affected
25.04 plucky Ignored end of life, was needs-triage
24.10 oracular
Not affected
24.04 LTS noble
Not affected
23.10 mantic Ignored end of life, was needs-triage
23.04 lunar Ignored end of life, was needs-triage
22.04 LTS jammy
Vulnerable
20.04 LTS focal Not in release
18.04 LTS bionic Ignored end of standard support
16.04 LTS xenial Ignored end of standard support
14.04 LTS trusty Ignored end of standard support
qtbase-opensource-src 25.10 questing
Not affected
25.04 plucky Ignored end of life, was needs-triage
24.10 oracular
Not affected
24.04 LTS noble
Not affected
23.10 mantic Ignored end of life, was needs-triage
23.04 lunar Ignored end of life, was needs-triage
22.04 LTS jammy
Fixed 5.15.3+dfsg-2ubuntu0.2+esm3
20.04 LTS focal
Fixed 5.12.8+dfsg-0ubuntu2.1+esm3
18.04 LTS bionic
Fixed 5.9.5+dfsg-0ubuntu2.6+esm2
16.04 LTS xenial
Not affected
14.04 LTS trusty Ignored end of standard support
qtbase-opensource-src-gles 25.10 questing
Not affected
25.04 plucky Ignored end of life, was needs-triage
24.10 oracular
Not affected
24.04 LTS noble
Not affected
23.10 mantic Ignored end of life, was needs-triage
23.04 lunar Ignored end of life, was needs-triage
22.04 LTS jammy
Needs evaluation
20.04 LTS focal Ignored end of standard support, was needs-triage
18.04 LTS bionic Ignored end of standard support
16.04 LTS xenial Ignored end of standard support
14.04 LTS trusty Ignored end of standard support

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
qtbase-opensource-src

Severity score breakdown

Parameter Value
Base score 9.8 · Critical
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

Other references