High severity7.5NVD Advisory· Published Dec 27, 2017· Updated Jun 17, 2026

CVE-2017-17847

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Enigmail/Enigmail2 versions
cpe:2.3:a:enigmail:enigmail:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:enigmail:enigmail:*:*:*:*:*:*:*:*range: <1.9.9
- (no CPE)range: <1.9.9
Debian/linux2 versions
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

Patches

Vulnerability mechanics

References

enigmail.net/download/other/Enigmail%20Pentest%20Report%20by%20Cure53%20-%20Excerpt.pdfnvdVendor Advisory
lists.debian.org/debian-security-announce/2017/msg00333.htmlnvdThird Party Advisory
sourceforge.net/p/enigmail/bugs/709/nvdThird Party Advisory
www.debian.org/security/2017/dsa-4070nvdThird Party Advisory
lists.debian.org/debian-lts-announce/2017/12/msg00021.htmlnvd
www.mail-archive.com/enigmail-users%40enigmail.net/msg04280.htmlnvd

News mentions

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