Vulnerability CVE-2017-17847
Published: 2017-12-27

Description:
An issue was discovered in Enigmail before 1.9.9. Signature spoofing is possible because the UI does not properly distinguish between an attachment signature, and a signature that applies to the entire containing message, aka TBE-01-021. This is demonstrated by an e-mail message with an attachment that is a signed e-mail message in message/rfc822 format.

Type:

CWE-347

 (Improper Verification of Cryptographic Signature)

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Enigmail -> Enigmail 
Debian -> Debian linux 

 References:
https://enigmail.net/download/other/Enigmail%20Pentest%20Report%20by%20Cure53%20-%20Excerpt.pdf
https://lists.debian.org/debian-lts-announce/2017/12/msg00021.html
https://lists.debian.org/debian-security-announce/2017/msg00333.html
https://sourceforge.net/p/enigmail/bugs/709/
https://www.debian.org/security/2017/dsa-4070
https://www.mail-archive.com/enigmail-users@enigmail.net/msg04280.html
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