CVE-2021-22173
HIGH
7.5
CVSS Score
Published: February 17, 2021 at 02:26 PM UTC
Updated: June 17, 2026 at 03:36 AM UTC
3 products affected across 3 vendorsFedoraWiresharkZfs Storage Appliance
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Severity
HIGH7.5
Exploit prediction
EPSS 2%
Description
Memory leak in USB HID dissector in Wireshark 3.4.0 to 3.4.2 allows denial of service via packet injection or crafted capture file
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 3.4.33.4.0 ≤ v < 3.4.3
Affected range stops below 3.4.3, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GND3PIQC3KZALR227V4YUMPKJBA5BZG4/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NYXLKQJ3D632XSG6VO7M4YFDAG6GRCLY/
- https://security.gentoo.org/glsa/202107-21
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://www.wireshark.org/security/wnpa-sec-2021-01.html
References (7)
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22173.jsonx_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://gitlab.com/wireshark/wireshark/-/issues/17124Vendor Advisoryx_refsource_FEDORA
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GND3PIQC3KZALR227V4YUMPKJBA5BZG4/Vendor Advisoryx_refsource_FEDORA
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NYXLKQJ3D632XSG6VO7M4YFDAG6GRCLY/Vendor Advisoryx_refsource_GENTOOThird Party Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202107-21x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://www.oracle.com/security-alerts/cpuApr2021.htmlx_refsource_MISCVendor Advisory
Source: [email protected]
https://www.wireshark.org/security/wnpa-sec-2021-01.htmlCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-401
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