CVE-2023-3354
Improper i/o watch removal in tls handshake can lead to remote unauthenticated denial of service
Severity Score
7.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
A flaw was found in the QEMU built-in VNC server. When a client connects to the VNC server, QEMU checks whether the current number of connections crosses a certain threshold and if so, cleans up the previous connection. If the previous connection happens to be in the handshake phase and fails, QEMU cleans up the connection again, resulting in a NULL pointer dereference issue. This could allow a remote unauthenticated client to cause a denial of service.
*Credits:
Red Hat would like to thank jiangyegen (Huawei Vulnerability Management Center) and yexiao7 (Huawei Vulnerability Management Center) for reporting this issue.
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2023-06-21 CVE Reserved
- 2023-07-11 CVE Published
- 2024-08-02 CVE Updated
- 2024-08-12 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-476: NULL Pointer Dereference
CAPEC
References (4)
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=2216478 | 2024-01-25 |
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2023-3354 | 2024-01-25 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Qemu Search vendor "Qemu" | Qemu Search vendor "Qemu" for product "Qemu" | < 8.1.0 Search vendor "Qemu" for product "Qemu" and version " < 8.1.0" | - |
Affected
| ||||||
| Qemu Search vendor "Qemu" | Qemu Search vendor "Qemu" for product "Qemu" | 8.1.0 Search vendor "Qemu" for product "Qemu" and version "8.1.0" | rc0 |
Affected
| ||||||
| Qemu Search vendor "Qemu" | Qemu Search vendor "Qemu" for product "Qemu" | 8.1.0 Search vendor "Qemu" for product "Qemu" and version "8.1.0" | rc1 |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Openstack Platform Search vendor "Redhat" for product "Openstack Platform" | 13.0 Search vendor "Redhat" for product "Openstack Platform" and version "13.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 7.0 Search vendor "Redhat" for product "Enterprise Linux" and version "7.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 8.0 Search vendor "Redhat" for product "Enterprise Linux" and version "8.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 8.0 Search vendor "Redhat" for product "Enterprise Linux" and version "8.0" | advanced_virtualization |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 9.0 Search vendor "Redhat" for product "Enterprise Linux" and version "9.0" | - |
Affected
| ||||||
| Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 38 Search vendor "Fedoraproject" for product "Fedora" and version "38" | - |
Affected
| ||||||