Fontforge
CVE-2017-17521
HIGH
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
1DescriptionCVE.org
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.
AnalysisAI
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. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Technical ContextAI
This vulnerability is classified under CWE-74. 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. Affected products include: Fontforge. Version information: through 20170731.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
FontForge 20190813 through 20190820 has a buffer overflow in PrefsUI_LoadPrefs in prefs.c. Rated critical severity (CVSS
FontForge 20190801 has a heap-based buffer overflow in the Type2NotDefSplines() function in splinesave.c. Rated high sev
FontForge 20190801 has a use-after-free in SFD_GetFontMetaData in sfd.c. Rated high severity (CVSS 8.8), this vulnerabil
FontForge 20161012 is vulnerable to a heap-based buffer overflow in readcffset (parsettf.c) resulting in DoS or code exe
FontForge 20161012 is vulnerable to a heap-based buffer over-read in readttfcopyrights (parsettf.c) resulting in DoS or
FontForge 20161012 is vulnerable to a stack-based buffer overflow in addnibble (parsettf.c) resulting in DoS or code exe
FontForge 20161012 is vulnerable to a heap-based buffer over-read in PSCharStringToSplines (psread.c) resulting in DoS o
FontForge 20161012 is vulnerable to a buffer over-read in getsid (parsettf.c) resulting in DoS or code execution via a c
FontForge 20161012 is vulnerable to a buffer over-read in strnmatch (char.c) resulting in DoS or code execution via a cr
FontForge 20161012 is vulnerable to a buffer over-read in ValidatePostScriptFontName (parsettf.c) resulting in DoS or co
FontForge 20161012 is vulnerable to a heap-based buffer over-read in readcfftopdicts (parsettf.c) resulting in DoS or co
FontForge 20161012 is vulnerable to a buffer over-read in umodenc (parsettf.c) resulting in DoS or code execution via a
Same technique Code Injection
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External POC / Exploit Code
Leaving vuln.today