Signed-email replay spoofing via unchecked signature date
Published Dec 22, 2022 · Updated Apr 15, 2025
Signature-validation bypass in Mozilla Thunderbird before 91.11 and before 102 allows remote attackers to present replayed email as current. The OpenPGP verifier accepts a valid signature when its creation time does not roughly match the email date Thunderbird displays. A victim must view an old, validly signed message resent with a later displayed date; the result is false trust in stale statements, not signature forgery.
Summary
What happened
Signature-validation bypass in Mozilla Thunderbird before 91.11 and before 102 allows remote attackers to present replayed email as current. The OpenPGP verifier accepts a valid signature when its creation time does not roughly match the email date Thunderbird displays. A victim must view an old, validly signed message resent with a later displayed date; the result is false trust in stale statements, not signature forgery.
The record
- CVE
- CVE-2022-2226
- Published
- Dec 22, 2022
- Updated
- Apr 15, 2025
- Vendor
- Mozilla
- Product
- Thunderbird
- Classifications
- CWE-294, T1565.002
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 22, 2022CVE publishedPublication date reported by the CVE source.
- Apr 15, 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=unspecified <102
- Affected versionversion=unspecified <91.11
What conditions does exploitation require?
What is affected?
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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