CVE-2017-17846
Regular expressions are exploitable for Denial of Service, because of attempts to match arbitrarily long strings, aka TBE-01-003.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.18%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue was discovered in Enigmail before 1.9.9. Regular expressions are exploitable for Denial of Service, because of attempts to match arbitrarily long strings, aka TBE-01-003.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.18% probability · 82th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- enigmail/enigmail · debian/debian linux
- Source
- cve@mitre.org
EPSS 2.2% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://enigmail.net/download/other/Enigmail%20Pentest%20Report%20by%20Cure53%20-%20Excerpt.pdfThird Party Advisory, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2017/12/msg00021.html
- https://lists.debian.org/debian-security-announce/2017/msg00333.htmlThird Party Advisory
- https://www.debian.org/security/2017/dsa-4070Third Party Advisory
- https://www.mail-archive.com/enigmail-users%40enigmail.net/msg04280.html
- https://enigmail.net/download/other/Enigmail%20Pentest%20Report%20by%20Cure53%20-%20Excerpt.pdfThird Party Advisory, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2017/12/msg00021.html
- https://lists.debian.org/debian-security-announce/2017/msg00333.htmlThird Party Advisory
- https://www.debian.org/security/2017/dsa-4070Third Party Advisory
- https://www.mail-archive.com/enigmail-users%40enigmail.net/msg04280.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.