CVE-2019-8338 — The signature verification routine in the Airmail GPG-PGP Plugin, versions 1
The signature verification routine in the Airmail GPG-PGP Plugin, versions 1.0 (9) and earlier, does not verify the status of the signature at all, which allows remote attackers to spoof arbitrary email signatures by crafting a signed email with an invalid signature. Also, it doe
Published
2019-05-16T16:02:46.000Z
Last modified
2024-08-04T21:17:31.096Z
01What is this vulnerability?
The signature verification routine in the Airmail GPG-PGP Plugin, versions 1.0 (9) and earlier, does not verify the status of the signature at all, which allows remote attackers to spoof arbitrary email signatures by crafting a signed email with an invalid signature. Also, it does not verify the validity of the signing key, which allows remote attackers to spoof arbitrary email signatures by…
02Affected products
| Vendor | Product | Versions |
|---|
| n | a / n/a | n/a |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2019-05-16T16:02:46.000Z
- Last modified: 2024-08-04T21:17:31.096Z
09References
- github.com — https://github.com/Airmail/AirmailPlugIn-Framework/commits/master
- seclists.org — http://seclists.org/fulldisclosure/2019/Apr/38
- packetstormsecurity.com — http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html
- www.openwall.com — https://www.openwall.com/lists/oss-security/2019/04/30/4
- github.com — https://github.com/RUB-NDS/Johnny-You-Are-Fired
- github.com — https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.p…
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