Update tampering via undisclosed trust validation failure
Published Jun 12, 2021 · Updated Aug 4, 2024
Man-in-the-middle weakness in Receita Federal IRPF 2021 1.7 allows man-in-the-middle attackers to modify update traffic. The public record identifies the update feature as the affected locus but does not disclose which trust or transport validation operation accepts attacker-controlled update data. Exploitation requires a network position between the application and update service; the published impact is limited to modification of update traffic.
Summary
What happened
Man-in-the-middle weakness in Receita Federal IRPF 2021 1.7 allows man-in-the-middle attackers to modify update traffic. The public record identifies the update feature as the affected locus but does not disclose which trust or transport validation operation accepts attacker-controlled update data. Exploitation requires a network position between the application and update service; the published impact is limited to modification of update traffic.
The record
- CVE
- CVE-2021-34682
- Published
- Jun 12, 2021
- Updated
- Aug 4, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- T1557
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 12, 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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Is a vulnerable build present?
What conditions does exploitation require?
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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