PT-2017-15039 · Enigmail · Enigmail

Published 2017-12-21 · Updated 2019-10-03 · CVE-2017-17843

Positive Technologies (AI Summary)

CVSS v3.1

5.9

Medium

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Name of the Vulnerable Software and Affected Versions Enigmail versions prior to 1.9.9

Description A problem has been discovered that allows remote attackers to trigger the use of an intended public key for encryption. This issue arises due to the use of incorrect regular expressions for extracting an email address from a comma-separated list. It can be demonstrated through a modified Full Name field and a homograph attack.

Recommendations For versions prior to 1.9.9, update to version 1.9.9 or later to resolve the issue. As a temporary workaround, consider restricting the use of public keys for encryption until the update is applied.

Fix

Related Identifiers

CVE-2017-17843

DLA-1219-1

DSA-4070-1

MGASA-2017-0477

Affected Products

Enigmail

References · 18

• https://osv.dev/vulnerability/DSA-4070-1 · Vendor Advisory
• https://enigmail.net/download/other/Enigmail%20Pentest%20Report%20by%20Cure53%20-%20Excerpt.pdf · Vendor Advisory
• https://advisories.mageia.org/MGASA-2017-0477.html · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2017-17843 · Vendor Advisory
• https://debian.org/security/2017/dsa-4070 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2017-17843 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2017-17843 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2017-17843 · Security Note
• https://osv.dev/vulnerability/MGASA-2017-0477 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2017-17843 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-17843 · Security Note
• https://ubuntu.com/security/CVE-2017-17843 · Vendor Advisory
• https://mozilla.org/en-US/security/advisories/mfsa2017-30 · Vendor Advisory
• https://bugs.mageia.org/show_bug.cgi?id=22251 · Note
• https://mail-archive.com/enigmail-users%40enigmail.net/msg04280.html · Note