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No exploitation reportedFix available

CVE-2017-17843

No exploitation reported by the sources we read.

  • Published2017-12-27

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An issue was discovered in Enigmail before 1.9.9 that allows remote attackers to trigger use of an intended public key for encryption, because incorrect regular expressions are used for extraction of an e-mail address from a comma-separated list, as demonstrated by a modified Full Name field and a homograph attack, aka TBE-01-002.

Timeline

dates in UTC
  1. 2017-12-2717:08CVE publishedNVD

Versions per branch

NVD
Debian debian linux
BranchAffectedFixed in
8.0= 8.0no fix published
9.0= 9.0no fix published
Enigmail
BranchAffectedFixed in
1.9< 1.9.91.9.9

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • enigmailUbuntu:16.04:LTSall versions · fixed in 2:1.9.9-0ubuntu0.16.04.1
  • enigmailUbuntu:14.04:LTSall versions · fixed in 2:1.9.9-0ubuntu0.14.04.1
  • enigmailDebian:11all versions · fixed in 2:1.9.9-1
  • enigmailDebian:9all versions · fixed in 2:1.9.9-1~deb9u1
  • enigmailDebian:8all versions · fixed in 2:1.9.9-1~deb8u1
  • enigmailDebian:7all versions · fixed in 2:1.9.9-1~deb7u1
  • thunderbirdMageia:6all versions · fixed in 52.5.2-1.mga6and 1 other package
  • thunderbirdMageia:5all versions · fixed in 52.5.2-1.mga5and 1 other package

Full record on NVD

Fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

  • EUVD-2017-8990same flawENISA EUVD · LicenseRef-ENISA-legal-notice
  • GHSA-cqjh-6c6c-f9gcsame flawGitHub Advisory Database · CC-BY-4.0
  • DLA-1219-1advisory covering several CVEsDebian · LicenseRef-unstated
  • DSA-4070-1advisory covering several CVEsDebian · LicenseRef-unstated
  • MGASA-2017-0477advisory covering several CVEsMageia · LicenseRef-unstated

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Published
2017-12-27
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-cqjh-6c6c-f9gc

Frequently asked questions

What is CVE-2017-17843?

An issue was discovered in Enigmail before 1.9.9 that allows remote attackers to trigger use of an intended public key for encryption, because incorrect regular expressions are used for extraction of an e-mail address from a comma-separated list, as demonstrated by a modified Full Name field and a homograph attack, aka TBE-01-002.

Is CVE-2017-17843 actively exploited?

Active exploitation of CVE-2017-17843 has not been confirmed. Its EPSS score was 1.1% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2017-17843?

CVE-2017-17843 has a CVSS v3 base score of 5.9 (MEDIUM severity), with vector string CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N.

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