CVE-2023-3354

HIGH Year: 2023
CVSS v3 Score
7.5
High
Weakness Type
CWE-476
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Vulnerability Description

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.

Related Vulnerabilities

CVE-1999-0052

HIGH
CVSS:7.5(High)

IP fragmentation denial of service in FreeBSD allows a remote attacker to cause a crash.

CWE-4761999

CVE-2002-0401

HIGH
CVSS:7.5(High)

SMB dissector in Ethereal 0.9.3 and earlier allows remote attackers to cause a denial of service (crash) or execute arbitrary code via malformed packets that cause Ethereal to dereference a NULL point...

CWE-4762002

CVE-2002-1912

HIGH
CVSS:7.5(High)

SkyStream EMR5000 1.16 through 1.18 does not drop packets or disable the Ethernet interface when the buffers are full, which allows remote attackers to cause a denial of service (null pointer exceptio...

CWE-4762002

CVE-2003-1000

HIGH
CVSS:7.5(High)

xchat 2.0.6 allows remote attackers to cause a denial of service (crash) via a passive DCC request with an invalid ID number, which causes a null dereference.

CWE-4762003

CVE-2003-1013

HIGH
CVSS:7.5(High)

The Q.931 dissector in Ethereal before 0.10.0, and Tethereal, allows remote attackers to cause a denial of service (crash) via a malformed Q.931, which triggers a null dereference.

CWE-4762003

CVE-2004-0079

HIGH
CVSS:7.5(High)

The do_change_cipher_spec function in OpenSSL 0.9.6c to 0.9.6k, and 0.9.7a to 0.9.7c, allows remote attackers to cause a denial of service (crash) via a crafted SSL/TLS handshake that triggers a null ...

CWE-4762004