Authorization token theft via injected redirect domain
Published Jun 22, 2023 · Updated Dec 5, 2024
Open redirect in Zscaler Client Connector allows remote authenticated users to steal authorization tokens during ZIA enrollment. The login flow accepted an attacker-supplied domain in a URL parameter and redirected the post-authentication callback, sending the token to that domain. Exploitation requires a user enrollment authentication flow and control of the injected redirect domain; the documented consequence is authorization-token disclosure.
Summary
What happened
Open redirect in Zscaler Client Connector allows remote authenticated users to steal authorization tokens during ZIA enrollment. The login flow accepted an attacker-supplied domain in a URL parameter and redirected the post-authentication callback, sending the token to that domain. Exploitation requires a user enrollment authentication flow and control of the injected redirect domain; the documented consequence is authorization-token disclosure.
The record
- CVE
- CVE-2023-28799
- Published
- Jun 22, 2023
- Updated
- Dec 5, 2024
- Vendor
- Zscaler
- Product
- Zscaler Client Connector
- Classifications
- CWE-1287, CWE-601, CAPEC-115, T1528
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 22, 2023CVE publishedPublication date reported by the CVE source.
- Dec 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <3.9 Mac, 3.7 Win, 1.9.3 iOS, 1.10.2 Android, 1.10.1 Chrome OS, 1.4 Linux
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
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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