IP spoofing via unchecked forwarded headers
Published Oct 2, 2023 · Updated Sep 23, 2024
Authentication bypass in pretix before 2023.7.1 allows remote attackers to spoof client IP addresses via crafted X-Forwarded-For headers. A configuration parser treats trust_x_forwarded_for, trust_x_forwarded_host, and trust_x_forwarded_proto set to off as enabled, so reverse-proxy headers are accepted without the intended administrator opt-in. Exploitation requires a self-hosted pretix deployment receiving attacker-controlled requests; the demonstrated consequence is forged client-IP identity and related integrity decisions, not direct data disclosure or service interruption.
Summary
What happened
Authentication bypass in pretix before 2023.7.1 allows remote attackers to spoof client IP addresses via crafted X-Forwarded-For headers. A configuration parser treats trust_x_forwarded_for, trust_x_forwarded_host, and trust_x_forwarded_proto set to off as enabled, so reverse-proxy headers are accepted without the intended administrator opt-in. Exploitation requires a self-hosted pretix deployment receiving attacker-controlled requests; the demonstrated consequence is forged client-IP identity and related integrity decisions, not direct data disclosure or service interruption.
The record
- CVE
- CVE-2023-44463
- Published
- Oct 2, 2023
- Updated
- Sep 23, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-290, T1036
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 2, 2023CVE publishedPublication date reported by the CVE source.
- Sep 23, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
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.
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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