Wi-Fi interruption via unchecked CSA channel
Published Sep 5, 2023 · Updated Aug 2, 2024
Improper authorization in Qualcomm Snapdragon WLAN Host allows remote attackers to interrupt Wi-Fi service through a crafted CSA IE. The station-side Channel Switch Announcement path accepts an out-of-range channel from the information element instead of rejecting it, triggering a transient denial-of-service state. An attacker must be within wireless reach and transmit the malformed management information element; the documented consequence is temporary WLAN interruption.
Summary
What happened
Improper authorization in Qualcomm Snapdragon WLAN Host allows remote attackers to interrupt Wi-Fi service through a crafted CSA IE. The station-side Channel Switch Announcement path accepts an out-of-range channel from the information element instead of rejecting it, triggering a transient denial-of-service state. An attacker must be within wireless reach and transmit the malformed management information element; the documented consequence is temporary WLAN interruption.
The record
- CVE
- CVE-2023-33020
- Published
- Sep 5, 2023
- Updated
- Aug 2, 2024
- Vendor
- Qualcomm
- Product
- Snapdragon
- Classifications
- CWE-285, T1499
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 5, 2023CVE publishedPublication date reported by the CVE source.
- Aug 2, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=9206 LTE Modem
- Affected versionversion=APQ8017
- Affected versionversion=APQ8052
- Affected versionversion=APQ8056
- Affected versionversion=APQ8076
- Affected versionversion=AR8031
- Affected versionversion=CSRA6620
- Affected versionversion=CSRA6640
- Affected versionversion=C-V2X 9150
- Affected versionversion=FastConnect 6200
- Affected versionversion=Home Hub 100 Platform
- Affected versionversion=MDM9250
- Affected versionversion=MDM9628
- Affected versionversion=MDM9650
- Affected versionversion=MSM8108
- Affected versionversion=MSM8209
- Affected versionversion=MSM8608
- Affected versionversion=MSM8909W
- Affected versionversion=MSM8996AU
- Affected versionversion=QCA6174A
- Affected versionversion=QCA6175A
- Affected versionversion=QCA6554A
- Affected versionversion=QCA6564A
- Affected versionversion=QCA6564AU
- Affected versionversion=QCA6574
- Affected versionversion=QCA6574A
- Affected versionversion=QCA6574AU
- Affected versionversion=QCA6584
- Affected versionversion=QCA6584AU
- Affected versionversion=QCA6595
- Affected versionversion=QCA6595AU
- Affected versionversion=QCA6696
- Affected versionversion=QCA9367
- Affected versionversion=QCA9377
- Affected versionversion=QCA9379
- Affected versionversion=Qualcomm 205 Mobile Platform
- Affected versionversion=Qualcomm 215 Mobile Platform
- Affected versionversion=SD626
- Affected versionversion=SDM429W
- Affected versionversion=SDX20M
- Affected versionversion=Smart Audio 200 Platform
- Affected versionversion=Smart Audio 400 Platform
- Affected versionversion=Smart Display 200 Platform (APQ5053-AA)
- Affected versionversion=Snapdragon 1200 Wearable Platform
- Affected versionversion=Snapdragon 208 Processor
- Affected versionversion=Snapdragon 210 Processor
- Affected versionversion=Snapdragon 212 Mobile Platform
- Affected versionversion=Snapdragon 425 Mobile Platform
- Affected versionversion=Snapdragon 429 Mobile Platform
- Affected versionversion=Snapdragon 439 Mobile Platform
- Affected versionversion=Snapdragon 450 Mobile Platform
- Affected versionversion=Snapdragon 617 Processor
- Affected versionversion=Snapdragon 625 Mobile Platform
- Affected versionversion=Snapdragon 626 Mobile Platform
- Affected versionversion=Snapdragon 632 Mobile Platform
- Affected versionversion=Snapdragon 650 Mobile Platform
- Affected versionversion=Snapdragon 652 Mobile Platform
- Affected versionversion=Snapdragon 653 Mobile Platform
- Affected versionversion=Snapdragon 820 Automotive Platform
- Affected versionversion=Snapdragon Auto 5G Modem-RF
- Affected versionversion=Snapdragon Wear 2100 Platform
- Affected versionversion=Snapdragon Wear 2500 Platform
- Affected versionversion=Snapdragon Wear 3100 Platform
- Affected versionversion=Snapdragon Wear 4100+ Platform
- Affected versionversion=Snapdragon X12 LTE Modem
- Affected versionversion=Snapdragon X20 LTE Modem
- Affected versionversion=Snapdragon X5 LTE Modem
- Affected versionversion=Vision Intelligence 100 Platform (APQ8053-AA)
- Affected versionversion=Vision Intelligence 200 Platform (APQ8053-AC)
- Affected versionversion=WCD9326
- Affected versionversion=WCD9330
- Affected versionversion=WCD9335
- Affected versionversion=WCN3610
- Affected versionversion=WCN3615
- Affected versionversion=WCN3620
- Affected versionversion=WCN3660
- Affected versionversion=WCN3660B
- Affected versionversion=WCN3680
- Affected versionversion=WCN3680B
- Affected versionversion=WCN3980
- Affected versionversion=WSA8810
- Affected versionversion=WSA8815
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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