Home/CVE/An integer underflow issue was found in the QEMU VNC server while processing ClientCutText messages in the extended form
CVE

CVE-2022-3165

An integer underflow issue was found in the QEMU VNC server while processing ClientCutText messages in the extended form

An integer underflow issue was found in the QEMU VNC server while processing ClientCutText messages in the extended format. A malicious client could use this flaw to make QEMU unresponsive by sending a specially crafted payload message, resulting in a denial of service.

MEDIUM · CVSS 6.5 EPSS 0.00151
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-191Integer Underflow (Wrap or Wraparound)
▤

Affected Products & Versions

2
qemu>= 6.1.0 and <= 7.1.0
fedoraproject fedoraall versions
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumPotentially Suspicious Usage Of Qemu
▣

Scoring & Timeline

6.5
MEDIUM · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD17 Oct 2022 · 04:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

5
msrcCVE-2022-3165
suse-csafSUSE-SU-2023:0671-1
rhsaRHSA-2023:2757Moderate
usnUSN-5772-1
rhsaRHSA-2023:2162Moderate
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://gitlab.com/qemu-project/qemu/-/commit/d307040b18PatchThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I36LKZA7Z65J3LJU2P37LVTWDFTXBMPU/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZTY7TVHX62OJWF6IOBCIGLR2N5K4QN3E/
https://security.netapp.com/advisory/ntap-20221223-0006/Third Party Advisory
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