6.5
MEDIUM
CVE-2023-3255
QEMU VNC Server Denial of Service Vulnerability
Description

A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. A wrong exit condition may lead to an infinite loop when inflating an attacker controlled zlib buffer in the `inflate_buffer` function. This could allow a remote authenticated client who is able to send a clipboard to the VNC server to trigger a denial of service.

INFO

Published Date :

Sept. 13, 2023, 5:15 p.m.

Last Modified :

Nov. 21, 2024, 8:16 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2023-3255 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Redhat enterprise_linux
1 Fedoraproject fedora
1 Qemu qemu
References to Advisories, Solutions, and Tools

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-3255 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2023-3255 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://access.redhat.com/errata/RHSA-2024:2135
    Added Reference https://access.redhat.com/errata/RHSA-2024:2962
    Added Reference https://access.redhat.com/security/cve/CVE-2023-3255
    Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2218486
    Added Reference https://security.netapp.com/advisory/ntap-20231020-0008/
  • CVE Modified by [email protected]

    Sep. 13, 2024

    Action Type Old Value New Value
    Removed Reference Red Hat, Inc. https://security.netapp.com/advisory/ntap-20231020-0008/
  • CVE Modified by [email protected]

    May. 22, 2024

    Action Type Old Value New Value
    Added Reference Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:2962 [No types assigned]
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Apr. 30, 2024

    Action Type Old Value New Value
    Added Reference Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:2135 [No types assigned]
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added CWE Red Hat, Inc. CWE-835
  • Modified Analysis by [email protected]

    Nov. 04, 2023

    Action Type Old Value New Value
    Changed Reference Type https://security.netapp.com/advisory/ntap-20231020-0008/ No Types Assigned https://security.netapp.com/advisory/ntap-20231020-0008/ Third Party Advisory
  • CVE Modified by [email protected]

    Oct. 20, 2023

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20231020-0008/ [No Types Assigned]
  • Initial Analysis by [email protected]

    Sep. 15, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://access.redhat.com/security/cve/CVE-2023-3255 No Types Assigned https://access.redhat.com/security/cve/CVE-2023-3255 Third Party Advisory
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=2218486 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=2218486 Issue Tracking, Patch, Third Party Advisory
    Added CWE NIST CWE-835
    Added CPE Configuration OR *cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* versions up to (including) 8.0.3
    Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-3255 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-3255 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.15 }} -0.01%

score

0.51312

percentile

CVSS31 - Vulnerability Scoring System
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