Vulnerability in Enigmail
CVE-2017-17847
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.012 (66.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 66.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
- Enigmail
- Debian Linux — versions 8.0, 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- enigmail.net/download/other/Enigmail Pentest Report by Cure53 - Excerpt.pdf (Vendor Advisory)
- sourceforge.net/p/enigmail/bugs/709/ (Third Party Advisory)
- lists.debian.org/debian-security-announce/2017/msg00333.html (Third Party Advisory)
- www.mail-archive.com/enigmail-users@enigmail.net/msg04280.html
- lists.debian.org/debian-lts-announce/2017/12/msg00021.html (mailing-list)
- www.debian.org/security/2017/dsa-4070 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-17847?
- CVE-2017-17847 is a high-severity vulnerability in Enigmail, classified under Improper Verification of Cryptographic Signature. CVSS score: 7.5/10. Published 2017-12-27.
- How severe is CVE-2017-17847?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2017-17847 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.