Horde Imp vulnerabilities

2 CVEs affecting Horde Imp, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2017-17689, published 2018-05-16.

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Known exploited (CISA KEV) first, then by EPSS exploit probability.

• CVE-2017-17688, published 2018-05-16. Medium severity, CVSS 5.9. EPSS: 5.5% chance of exploitation in the next 30 days. The OpenPGP specification allows a Cipher Feedback Mode (CFB) malleability-gadget attack that can indirectly lead to plaintext exfiltration, aka EFAIL. NOTE: third parties report that this is a…
• CVE-2017-17689, published 2018-05-16. Medium severity, CVSS 5.9. EPSS: 4.2% chance of exploitation in the next 30 days. The S/MIME specification allows a Cipher Block Chaining (CBC) malleability-gadget attack that can indirectly lead to plaintext exfiltration, aka EFAIL.