CVE-2017-17843: Debian Linux

Medium severity, CVSS 5.9. EPSS: 1.1% chance of exploitation in the next 30 days.

An issue was discovered in Enigmail before 1.9.9 that allows remote attackers to trigger use of an intended public key for encryption, because incorrect regular expressions are used for extraction of an e-mail address from a comma-separated list, as demonstrated by a modified Full Name field and a homograph attack, aka TBE-01-002.

Affected products

• Debian Debian Linux: version 8.0 only; version 9.0 only
• Enigmail Enigmail: before 1.9.9 (fixed in 1.9.9)

Published 2017-12-27. Last modified 2026-06-17.