CVE-2017-17843 Other in n/a

What is CVE-2017-17843?

CVE-2017-17843 is a medium-severity vulnerability in Debian Debian Linux, published on 22 Dec 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Which versions are affected by CVE-2017-17843?

It affects 2 products.

Products include Debian Debian Linux, Enigmail Enigmail.

How do I fix CVE-2017-17843?

Upgrade to a fixed version.

Is CVE-2017-17843 being exploited?

There is no known exploitation of CVE-2017-17843 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2017-17843, GHSA-cqjh-6c6c-f9gc, UBUNTU-CVE-2017-17843.