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7.5

Request Tracker on Fedora Ubuntu Debian may cause outage

CVE-2018-18898 · published 7 years ago
Summary

The email handling part of Request Tracker versions 4.1.13 through 4.4 can be confused by a specially crafted email address, causing the system to become very slow or stop working. This could interrupt your help‑desk or ticketing service. Install the latest Request Tracker update or apply the security patch provided by your operating‑system vendor to fix the problem.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
bestpractical request_tracker >= 4.1.13, <= 4.4.0
cpe:2.3:a:bestpractical:request_tracker:*:*:*:*:*:*:*:*
fedoraproject fedora 28
29
cpe:2.3:o:fedoraproject:fedora:28:*:*:*:*:*:*:*
canonical ubuntu_linux 16.04
18.04
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
debian debian_linux 8.0
10.0
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
Original advisory text
The email-ingestion feature in Best Practical Request Tracker 4.1.13 through 4.4 allows denial of service by remote attackers via an algorithmic complexity attack on email address parsing.
The email-ingestion feature in Best Practical Request Tracker 4.1.13 through 4.4 allows denial of service by remote attackers via an algorithmic complexity attack on email address parsing.
References
Fix within
Internet-facing 14 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically (estimated)
  • Gives an attacker partial control (estimated)
Severity
7.5 High
Exploitation
2% chance of attack within 30 days
Type
CWE-400Uncontrolled Resource Consumption
Timeline
Published21 Mar 2019
Updated29 Oct 2026
First seen29 Sep 2026
Sources
CVE-2018-18898 · NVD
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