CVE Vulnerabilities

CVE-2017-17521

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Published: Dec 14, 2017 | Modified: Jun 17, 2026
CVSS 3.x
8.8
HIGH
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.x
6.8 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
5.3 MODERATE
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Ubuntu
LOW

uiutil.c in FontForge through 20170731 does not validate strings before launching the program specified by the BROWSER environment variable, which might allow remote attackers to conduct argument-injection attacks via a crafted URL, a different vulnerability than CVE-2017-17534.

Weakness

The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.

Affected Software

NameVendorStart VersionEnd Version
FontforgeFontforge*20170731 (including)
FontforgeUbuntuartful*
FontforgeUbuntubionic*
FontforgeUbuntucosmic*
FontforgeUbuntudevel*
FontforgeUbuntudisco*
FontforgeUbuntueoan*
FontforgeUbuntuesm-apps-legacy/xenial*
FontforgeUbuntuesm-apps/bionic*
FontforgeUbuntuesm-apps/focal*
FontforgeUbuntuesm-apps/jammy*
FontforgeUbuntuesm-apps/noble*
FontforgeUbuntuesm-apps/resolute*
FontforgeUbuntuesm-apps/xenial*
FontforgeUbuntufocal*
FontforgeUbuntugroovy*
FontforgeUbuntuhirsute*
FontforgeUbuntuimpish*
FontforgeUbuntujammy*
FontforgeUbuntukinetic*
FontforgeUbuntulunar*
FontforgeUbuntumantic*
FontforgeUbuntunoble*
FontforgeUbuntuoracular*
FontforgeUbuntuplucky*
FontforgeUbuntuquesting*
FontforgeUbunturesolute*
FontforgeUbuntustonking*
FontforgeUbuntutrusty*
FontforgeUbuntuxenial*
FontforgeUbuntuzesty*

Potential Mitigations

References