// For flags

CVE-2024-39936

qtbase: qtbase: Delay any communication until encrypted() can be responded to

Severity Score

5.9
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

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..

Se descubrió un problema en HTTP2 en Qt antes de 5.15.18, 6.x antes de 6.2.13, 6.3.x hasta 6.5.x antes de 6.5.7 y 6.6.x hasta 6.7.x antes de 6.7.3. El código para tomar decisiones relevantes para la seguridad sobre una conexión establecida puede ejecutarse demasiado pronto, porque la señal encrypted() aún no se ha emitido ni procesado.

A vulnerability was found in Qt where, during a TLS connection for servers supporting HTTP2, Qt may send data to a server even if the TLS certificate doesn't match the redirected address. This occurs because Qt fails to validate the certificate against the redirected address, potentially sending data to an incorrect or malicious server.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2024-07-04 CVE Reserved
  • 2024-07-04 CVE Published
  • 2024-07-09 EPSS Updated
  • 2024-08-02 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Qt
Search vendor "Qt"
 Qt
Search vendor "Qt" for product "Qt"
 < 5.15.18
Search vendor "Qt" for product "Qt" and version " < 5.15.18"
-
Affected
Qt
Search vendor "Qt"
 Qt
Search vendor "Qt" for product "Qt"
 >= 6.0.0 < 6.2.13
Search vendor "Qt" for product "Qt" and version " >= 6.0.0 < 6.2.13"
-
Affected
Qt
Search vendor "Qt"
 Qt
Search vendor "Qt" for product "Qt"
 >= 6.3.0 < 6.5.7
Search vendor "Qt" for product "Qt" and version " >= 6.3.0 < 6.5.7"
-
Affected
Qt
Search vendor "Qt"
 Qt
Search vendor "Qt" for product "Qt"
 >= 6.6.0 < 6.7.3
Search vendor "Qt" for product "Qt" and version " >= 6.6.0 < 6.7.3"
-
Affected