Open redirect via reflected error-page input
Published Nov 30, 2023 · Updated Dec 2, 2024
Reflected XSS in Sophos Email Appliance 4.5.3.3 allows remote attackers to redirect victims through a malicious error-page link. The error page reflects attacker-controlled link input into its response without adequate output neutralization; Sophos has not identified the affected handler or parameter. Exploitation requires an unauthenticated attacker to persuade a victim to click the crafted link, and the published consequence is browser redirection.
Summary
What happened
Reflected XSS in Sophos Email Appliance 4.5.3.3 allows remote attackers to redirect victims through a malicious error-page link. The error page reflects attacker-controlled link input into its response without adequate output neutralization; Sophos has not identified the affected handler or parameter. Exploitation requires an unauthenticated attacker to persuade a victim to click the crafted link, and the published consequence is browser redirection.
The record
- CVE
- CVE-2021-36806
- Published
- Nov 30, 2023
- Updated
- Dec 2, 2024
- Vendor
- Sophos
- Product
- Sophos Email Appliance
- Classifications
- CWE-79, CAPEC-591, T1204.001
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 30, 2023CVE publishedPublication date reported by the CVE source.
- Dec 2, 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=4.5.3.3
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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