CVE-2017-17844 Information

Description

An issue was discovered in Enigmail before 1.9.9. A remote attacker can obtain cleartext content by sending an encrypted data block (that the attacker cannot directly decrypt) to a victim and relying on the victim to automatically decrypt that block and then send it back to the attacker as quoted text aka the TBE-01-005 \replay\ issue.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Reference

https://enigmail.net/download/other/Enigmail20Pentest20Report20by20Cure5320-20Excerpt.pdf https://lists.debian.org/debian-lts-announce/2017/12/msg00021.html https://lists.debian.org/debian-security-announce/2017/msg00333.html https://www.debian.org/security/2017/dsa-4070 https://www.mail-archive.com/enigmail-users@enigmail.net/msg04280.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

6.5