Server impersonation via weak authorization-key encryption
Published Aug 2, 2024 · Updated Aug 2, 2024
Inadequate encryption in TCBServiSign for Windows before 1.0.24.0318 allows remote attackers to impersonate a trusted server. Weak encryption lets attackers recover the authorization key used for server communications, causing the client to accept a malicious site as legitimate. Exploitation requires an unauthenticated remote attacker to trick a user into visiting the malicious site, enabling confidential information disclosure through the resulting interaction.
Summary
What happened
Inadequate encryption in TCBServiSign for Windows before 1.0.24.0318 allows remote attackers to impersonate a trusted server. Weak encryption lets attackers recover the authorization key used for server communications, causing the client to accept a malicious site as legitimate. Exploitation requires an unauthenticated remote attacker to trick a user into visiting the malicious site, enabling confidential information disclosure through the resulting interaction.
The record
- CVE
- CVE-2024-40719
- Published
- Aug 2, 2024
- Updated
- Aug 2, 2024
- Vendor
- CHANGING Information Technology Inc.
- Product
- TCBServiSign for Windows
- Classifications
- CWE-326, T1189
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 2, 2024CVE publishedPublication date reported by the CVE source.
- Aug 2, 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?
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- Affected versionversion=0 <1.0.24.0318
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
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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