Unspecified impact via unsafe fax filename handling
Published Nov 5, 2021 · Updated Aug 4, 2024
Improper fax filename handling in FusionPBX before 4.5.30 allows remote authenticated users to cause unspecified impact via a fax upload. The fax_send.php upload path derives the stored name from the client-supplied filename and replaces only a fixed list of characters. The public record does not disclose which surviving characters complete an exploit chain or the resulting operation, so no concrete confidentiality, integrity, or availability outcome is established.
Summary
What happened
Improper fax filename handling in FusionPBX before 4.5.30 allows remote authenticated users to cause unspecified impact via a fax upload. The fax_send.php upload path derives the stored name from the client-supplied filename and replaces only a fixed list of characters. The public record does not disclose which surviving characters complete an exploit chain or the resulting operation, so no concrete confidentiality, integrity, or availability outcome is established.
The record
- CVE
- CVE-2021-43404
- Published
- Nov 5, 2021
- Updated
- Aug 4, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Nov 5, 2021CVE publishedPublication date reported by the CVE source.
- Aug 4, 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.
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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