UBUNTU-CVE-2023-6683
- Source
- https://ubuntu.com/security/CVE-2023-6683
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-6683.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2023-6683
- Upstream
- Downstream
- Related
- Published
- 2024-01-12T19:15:00Z
- Modified
- 2025-07-18T16:54:15Z
- Severity
-
- 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Ubuntu - medium
- Summary
- [none]
- Details
-
A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. The qemuclipboardrequest() function can be reached before vncservercuttextcaps() was called and had the chance to initialize the clipboard peer, leading to a NULL pointer dereference. This could allow a malicious authenticated VNC client to crash QEMU and trigger a denial of service.
- References
Affected packages
Ubuntu:22.04:LTS / qemu
Package
- Name
- qemu
- Purl
- pkg:deb/ubuntu/qemu@1:6.2+dfsg-2ubuntu6.22?arch=source&distro=jammy
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed1:6.2+dfsg-2ubuntu6.22
Affected versions
1:6.*
1:6.0+dfsg-2expubuntu1
1:6.0+dfsg-2expubuntu2
1:6.0+dfsg-2expubuntu4
1:6.2+dfsg-2ubuntu5
1:6.2+dfsg-2ubuntu6
1:6.2+dfsg-2ubuntu6.1
1:6.2+dfsg-2ubuntu6.2
1:6.2+dfsg-2ubuntu6.3
1:6.2+dfsg-2ubuntu6.4
1:6.2+dfsg-2ubuntu6.5
1:6.2+dfsg-2ubuntu6.6
1:6.2+dfsg-2ubuntu6.7
1:6.2+dfsg-2ubuntu6.8
1:6.2+dfsg-2ubuntu6.9
1:6.2+dfsg-2ubuntu6.10
1:6.2+dfsg-2ubuntu6.11
1:6.2+dfsg-2ubuntu6.12
1:6.2+dfsg-2ubuntu6.13
1:6.2+dfsg-2ubuntu6.14
1:6.2+dfsg-2ubuntu6.15
1:6.2+dfsg-2ubuntu6.16
1:6.2+dfsg-2ubuntu6.17
1:6.2+dfsg-2ubuntu6.18
1:6.2+dfsg-2ubuntu6.19
1:6.2+dfsg-2ubuntu6.21
Ecosystem specific
{
"availability": "No subscription required",
"binaries": [
{
"binary_name": "qemu",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-block-extra",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-block-extra-dbgsym",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-guest-agent",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-guest-agent-dbgsym",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-system",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-system-arm",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-system-arm-dbgsym",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-system-common",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-system-common-dbgsym",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-system-data",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-system-gui",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-system-gui-dbgsym",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-system-mips",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-system-mips-dbgsym",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-system-misc",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-system-misc-dbgsym",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-system-ppc",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-system-ppc-dbgsym",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-system-s390x",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-system-s390x-dbgsym",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-system-sparc",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-system-sparc-dbgsym",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-system-x86",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-system-x86-dbgsym",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-system-x86-microvm",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-system-x86-xen",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-system-x86-xen-dbgsym",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-user",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-user-binfmt",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-user-dbgsym",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-user-static",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-user-static-dbgsym",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-utils",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
},
{
"binary_name": "qemu-utils-dbgsym",
"binary_version": "1:6.2+dfsg-2ubuntu6.22"
}
]
}