Memory disclosure via unchecked WLAN attribute lengths
Published Feb 22, 2021 · Updated Aug 4, 2024
Buffer over-read in Qualcomm Snapdragon WLAN firmware allows remote attackers to disclose memory via crafted beacon or probe-response frames. The P2P information-element and Notice of Absence parser fails to validate advertised attribute lengths against the received frame before reading. Exposure requires an affected WLAN component to process an attacker-controlled management frame; service disruption is also possible, but Qualcomm has not specified whether it causes a hang, crash, or reboot.
Summary
What happened
Buffer over-read in Qualcomm Snapdragon WLAN firmware allows remote attackers to disclose memory via crafted beacon or probe-response frames. The P2P information-element and Notice of Absence parser fails to validate advertised attribute lengths against the received frame before reading. Exposure requires an affected WLAN component to process an attacker-controlled management frame; service disruption is also possible, but Qualcomm has not specified whether it causes a hang, crash, or reboot.
The record
- CVE
- CVE-2020-11276
- Published
- Feb 22, 2021
- Updated
- Aug 4, 2024
- Vendor
- Qualcomm
- Product
- Snapdragon
- Classifications
- Unavailable
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 22, 2021CVE publishedPublication date reported by the CVE source.
- Aug 4, 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=APQ8009, APQ8017, APQ8053, APQ8064AU, APQ8076, APQ8084, APQ8092, APQ8094, APQ8096AU, AQT1000, AR8031, AR8035, AR8151, AR9380, CSR6030, CSR8811, CSRA6620, CSRA6640, CSRB31024, IPQ4018, IPQ4028, IPQ4029, IPQ5010, IPQ5018, IPQ6000, IPQ6005, IPQ6010, IPQ6018, IPQ6028, IPQ8064, IPQ8069, IPQ8070, IPQ8070A, IPQ8071, IPQ8071A, IPQ8072, IPQ8072A, IPQ8074, IPQ8074A, IPQ8076, IPQ8076A, IPQ8078, IPQ8078A, IPQ8173, IPQ8174, MDM8215, MDM9206, MDM9215, MDM9225, MDM9225M, MDM9230, MDM9235M, MDM9250, MDM9310, MDM9330, MDM9607, MDM9615, MDM9625, MDM9625M, MDM9626, MDM9628, MDM9630, MDM9635M, MDM9640, MDM9645, MDM9650, MDM9655, MSM8976, MSM8992, MSM8994, MSM8996AU, PM3003A, PM4125, PM4250, PM456, PM6125, PM6150, PM6150A, PM6150L, PM6250, PM6350, PM640A, PM640L, PM640P, PM660, PM660A, PM660L, PM670, PM670A, PM670L, PM7150A, PM7150L, PM7250, PM7250B, PM8004, PM8005, PM8008, PM8009, PM8018, PM8019, PM8150, PM8150A, PM8150B, PM8150C, PM8150L, PM8250, PM8350, PM8350B, PM8350BH, PM8350C, PM855, PM855A, PM855B, PM855L, ...[truncated*]
What conditions does exploitation require?
What is affected?
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.
Weakness, pattern, technique
No sourced classifications are available.
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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