CVE-2023-33019 — Transient DOS in WLAN Host while doing channel switch announcement (CSA), when a

Transient DOS in WLAN Host while doing channel switch announcement (CSA), when a mobile station receives invalid channel in CSA IE.

01What is this vulnerability?

Transient DOS in WLAN Host while doing channel switch announcement (CSA), when a mobile station receives invalid channel in CSA IE.

02Affected products

Vendor	Product	Versions
Qualcomm, Inc.	Snapdragon	9206 LTE Modem, APQ8017, APQ8052, APQ8056, APQ8076, AR8031, C-V2X 9150, CSRA6620, CSRA6640, FastConnect 6200, Home Hub 100 Platform, MDM9250, MDM9628, MDM9650, MSM8108, MSM8209, MSM8608, MSM8909W, MSM8996AU, QCA6174A, QCA6175A, QCA6554A, QCA6564A, QCA6564AU, QCA6574, QCA6574A, QCA6574AU, QCA6584, QCA6584AU, QCA6595, QCA6595AU, QCA6696, QCA9367, QCA9377, QCA9379, Qualcomm 205 Mobile Platform, Qualcomm 215 Mobile Platform, SD626, SDM429W, SDX20M, Smart Audio 200 Platform, Smart Audio 400 Platform, Smart Display 200 Platform (APQ5053-AA), Snapdragon 1200 Wearable Platform, Snapdragon 208 Processor, Snapdragon 210 Processor, Snapdragon 212 Mobile Platform, Snapdragon 425 Mobile Platform, Snapdragon 429 Mobile Platform, Snapdragon 439 Mobile Platform, Snapdragon 450 Mobile Platform, Snapdragon 617 Processor, Snapdragon 625 Mobile Platform, Snapdragon 626 Mobile Platform, Snapdragon 632 Mobile Platform, Snapdragon 650 Mobile Platform, Snapdragon 652 Mobile Platform, Snapdragon 653 Mobile Platform, Snapdragon 820 Automotive Platform, Snapdragon Auto 5G Modem-RF, Snapdragon Wear 2100 Platform, Snapdragon Wear 2500 Platform, Snapdragon Wear 3100 Platform, Snapdragon Wear 4100+ Platform, Snapdragon X12 LTE Modem, Snapdragon X20 LTE Modem, Snapdragon X5 LTE Modem, Vision Intelligence 100 Platform (APQ8053-AA), Vision Intelligence 200 Platform (APQ8053-AC), WCD9326, WCD9330, WCD9335, WCN3610, WCN3615, WCN3620, WCN3660, WCN3660B, WCN3680, WCN3680B, WCN3980, WSA8810, WSA8815

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-09-05T06:24:31.530Z
• Last modified: 2024-08-02T15:32:46.604Z

09References

• www.qualcomm.com — https://www.qualcomm.com/company/product-security/bulletins/september-2023-bulle…