Medium severity · published Sep 13, 2023
CVE-2023-3255
A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages
6.5
CVSS
1.9%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.9% · higher than 79% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EL
Enterprise Linux · Redhat
8.0; 9.0 · source: NVD
FE
Fedora · Fedoraproject
38 · source: NVD
QE
Qemu · Qemu
through 8.0.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-3255
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-3255
access.redhat.com
https://access.redhat.com/errata/RHSA-2024:2135
access.redhat.com
https://access.redhat.com/errata/RHSA-2024:2962
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-3255
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2218486
security.netapp.com
https://security.netapp.com/advisory/ntap-20231020-0008/
More from Fedora
10.0
CVE-2021-44228
Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints
10.0
CVE-2015-3306
ProFTPD Improper Access Control Vulnerability
9.8
CVE-2024-4577
Argument Injection in PHP-CGI
9.8
CVE-2021-44026
Roundcube Webmail SQL Injection Vulnerability
9.8
CVE-2021-42013
Path Traversal and Remote Code Execution in Apache HTTP Server 2.4.49 and 2.4.50 (incomplete fix of CVE-2021-41773)