Traffic disclosure via mishandled proxy state
Published Aug 24, 2021 · Updated Aug 3, 2024
Information disclosure in CFNetwork Proxies in Apple operating systems allows remote attackers to receive user traffic through a proxy. CFNetwork Proxies mishandles connection state and routes traffic to a proxy even when the applicable PAC configuration excludes it. The issue requires a PAC-controlled proxy environment; the published impact is limited to unintended traffic disclosure to that proxy.
Summary
What happened
Information disclosure in CFNetwork Proxies in Apple operating systems allows remote attackers to receive user traffic through a proxy. CFNetwork Proxies mishandles connection state and routes traffic to a proxy even when the applicable PAC configuration excludes it. The issue requires a PAC-controlled proxy environment; the published impact is limited to unintended traffic disclosure to that proxy.
The record
- CVE
- CVE-2021-30966
- Published
- Aug 24, 2021
- Updated
- Aug 3, 2024
- Vendor
- Apple
- Product
- iOS and iPadOS
- Classifications
- Unavailable
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 24, 2021CVE publishedPublication date reported by the CVE source.
- Aug 3, 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=unspecified <15.2
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.
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Technologies
Your stack
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Your stack
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