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A security vulnerability (CVE-2024-39936) was identified in the qt5-qtbase package used in Red Hat Enterprise Linux 7 Extended Lifecycle Support. The issue involves the qtbase component delaying communication until the encrypted() signal can be responded to. Red Hat has issued an important security update to address this vulnerability. The update is available for multiple architectures of Red Hat Enterprise Linux 7 Extended Lifecycle Support. No CVSS score is provided, but the severity is rated as important by Red Hat.

CVE-2024-39936 affects the qt5-qtbase package, specifically the qtbase component responsible for string, XML, and network handling in Qt. The vulnerability involves delaying any communication until the encrypted() signal can be responded to, which addresses a security issue related to encrypted communication handling. Red Hat has released an update for Red Hat Enterprise Linux 7 Extended Lifecycle Support to fix this issue. The advisory references Red Hat's errata RHSA-2024:4647 and provides updated packages for various architectures. No detailed CVSS score is available in the advisory.

Detailed information about Red Hat Security Advisory: qt5-qtbase security update affecting Red Hat Product Security Red Hat. Get real-time updates, technical de

Red Hat Security Advisory: qt5-qtbase security update - Live Threat Intelligence - Threat Radar | OffSeq.com

https://access.redhat.com/errata/RHSA-2024:4647

https://access.redhat.com/security/updates/classification/#important

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Red Hat Security Advisory: qt5-qtbase security update

qtbase

An issue was discovered in HTTP2 in Qt before 5.15.18, 6.x before 6.2.13, 6.3.x through 6.5.x before 6.5.7, and 6.6.x through 6.7.x before 6.7.3. Code to make security-relevant decisions about an established connection may execute too early, because the encrypted() signal has not yet been emitted and processed..

CVE-2024-39936 is a vulnerability in the HTTP/2 protocol implementation within the Qt framework, affecting multiple versions before 5.15.18, 6.2.13, 6.5.7, and 6.7.3. The root cause is a timing issue where code responsible for making security-relevant decisions about an established connection executes too early, before the encrypted() signal is emitted and processed. The encrypted() signal in Qt indicates that the TLS handshake has completed and the connection is secure. If security checks are performed before this signal, the application may incorrectly assume the connection is secure or apply security policies prematurely, potentially allowing attackers to intercept or manipulate data. The vulnerability is classified under CWE-367 (Time-of-check Time-of-use (TOCTOU) race condition), highlighting the risk of decisions based on stale or incomplete state information. The CVSS 3.1 score of 8.6 reflects a high severity with network attack vector, no privileges required, no user interaction, and a critical impact on confidentiality. No integrity or availability impacts are noted. Although no exploits are currently known in the wild, the widespread use of Qt in desktop, mobile, and embedded applications that utilize HTTP/2 means the attack surface is significant. Attackers could exploit this flaw remotely to gain unauthorized access to sensitive data transmitted over HTTP/2 connections. The vulnerability affects multiple branches of Qt, emphasizing the need for comprehensive patching across all affected versions. The lack of patch links in the provided data suggests patches may be pending or recently released, so organizations should monitor vendor advisories closely. This vulnerability is particularly relevant for applications handling sensitive communications, such as financial, healthcare, or governmental software.

Detailed information about CVE-2024-39936: n/a. Get real-time updates, technical details, and mitigation strategies.

CVE-2024-39936: n/a - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2024-39936: n/a


Red Hat Security Advisory: qt5-qtbase security updateCVE-2024-39936 0 A security vulnerability (CVE-2024-39936) was identified in the qt5-qtbase package used in Red Hat Enterprise Linux 7 Extended Lifecycle Support. The issue involves the qtbase component delaying communication until the encrypted() signal can be responded to. Red Hat has issued an important security update to address this vulnerability. The update is available for multiple architectures of Red Hat Enterprise Linux 7 Extended Lifecycle Support. No CVSS score is provided, but the severity is rated as important by Red Hat. HighVulnerability#gcve #csaf #cve-2024-39936 Join the discussion	GCVE Database	07/18/2024, 16:09:10 UTC Added: 06/25/2026, 21:47:30 UTC
CVE-2024-39936: n/aCVE-2024-39936 0 An issue was discovered in HTTP2 in Qt before 5.15.18, 6.x before 6.2.13, 6.3.x through 6.5.x before 6.5.7, and 6.6.x through 6.7.x before 6.7.3. Code to make security-relevant decisions about an established connection may execute too early, because the encrypted() signal has not yet been emitted and processed.. HighVulnerabilityGermanyFranceUnited Kingdom+4#cve #cve-2024-39936 Join the discussion	CVE Database V5	07/04/2024, 00:00:00 UTC Added: 11/29/2025, 13:12:04 UTC

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