Unauthenticated SSRF via null-byte hostname allowlist bypass
Published Apr 4, 2025 · Updated Apr 4, 2025
SSRF in Bitdefender GravityZone Update Server before 3.5.2.689 allows remote attackers to proxy requests to arbitrary systems. The port 7074 HTTP proxy checks an unsanitized hostname against its domain allowlist, allowing a percent-encoded null byte to conceal the actual destination. Relay Mode and network access to port 7074 are required; exploitation reaches otherwise inaccessible internal or external systems through the server.
Summary
What happened
SSRF in Bitdefender GravityZone Update Server before 3.5.2.689 allows remote attackers to proxy requests to arbitrary systems. The port 7074 HTTP proxy checks an unsanitized hostname against its domain allowlist, allowing a percent-encoded null byte to conceal the actual destination. Relay Mode and network access to port 7074 are required; exploitation reaches otherwise inaccessible internal or external systems through the server.
The record
- CVE
- CVE-2025-2245
- Published
- Apr 4, 2025
- Updated
- Apr 4, 2025
- Vendor
- Bitdefender
- Product
- GravityZone Update Server
- Classifications
- CWE-918, T1090
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 4, 2025CVE publishedPublication date reported by the CVE source.
- Apr 4, 2025Record 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 <3.5.2.689
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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Public exploit references
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Technologies
Your stack
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Your stack
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