Server spoofing via cleartext HTTP session
Published Feb 26, 2021 · Updated Sep 17, 2024
Cleartext transmission in Synology DiskStation Manager before 6.2.3-25426-3 allows man-in-the-middle attackers to spoof servers via HTTP. The synoagentregisterd service sends its server-finder requests over plaintext HTTP and accepts an attacker-modified syno_finder_site response, enabling redirection to an impostor server. A network-positioned attacker must intercept the session; spoofing can redirect registration traffic and, in the related unsafe memory handling path, lead to code execution, while this CVE's stated impact is server spoofing.
Summary
What happened
Cleartext transmission in Synology DiskStation Manager before 6.2.3-25426-3 allows man-in-the-middle attackers to spoof servers via HTTP. The synoagentregisterd service sends its server-finder requests over plaintext HTTP and accepts an attacker-modified syno_finder_site response, enabling redirection to an impostor server. A network-positioned attacker must intercept the session; spoofing can redirect registration traffic and, in the related unsafe memory handling path, lead to code execution, while this CVE's stated impact is server spoofing.
The record
- CVE
- CVE-2021-26560
- Published
- Feb 26, 2021
- Updated
- Sep 17, 2024
- Vendor
- Synology
- Product
- Synology DiskStation Manager
- Classifications
- CWE-319, T1557
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 26, 2021CVE publishedPublication date reported by the CVE source.
- Sep 17, 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 <6.2.3-25426-3
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
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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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