Kernel-address disclosure via fixed-offset IOCTL response
Published Apr 23, 2024 · Updated Sep 5, 2024
Information disclosure in Bkav Home 7816 build 2403161130 allows local users to read a kernel address through driver IOCTL 0x222240. The BkavSDFlt.sys handler returns the absolute address of a global variable whose offset from the driver's module base remains constant. A low-privileged local account can use the disclosure to defeat address randomization for that module; no data modification or service interruption is reported.
Summary
What happened
Information disclosure in Bkav Home 7816 build 2403161130 allows local users to read a kernel address through driver IOCTL 0x222240. The BkavSDFlt.sys handler returns the absolute address of a global variable whose offset from the driver's module base remains constant. A low-privileged local account can use the disclosure to defeat address randomization for that module; no data modification or service interruption is reported.
The record
- CVE
- CVE-2024-2760
- Published
- Apr 23, 2024
- Updated
- Sep 5, 2024
- Vendor
- Bkav Corporation
- Product
- Bkav Home
- Classifications
- CWE-404, CAPEC-131
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 23, 2024CVE publishedPublication date reported by the CVE source.
- Sep 5, 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?
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- Affected versionversion=7816
- Affected versionversion=v7816, build 2403161130
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.
Weakness, pattern, technique
Public exploit references
- IOCTLBruteForce kernel-address proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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