Fontforge
CVE-2020-5395
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:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
1DescriptionNVD
FontForge 20190801 has a use-after-free in SFD_GetFontMetaData in sfd.c.
AnalysisAI
FontForge 20190801 has a use-after-free in SFD_GetFontMetaData in sfd.c. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Technical ContextAI
This vulnerability is classified as Use After Free (CWE-416), which allows attackers to access freed memory to execute arbitrary code or crash the application. FontForge 20190801 has a use-after-free in SFD_GetFontMetaData in sfd.c. Affected products include: Fontforge, Fedoraproject Fedora, Opensuse Leap.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use smart pointers or garbage-collected languages. Set pointers to NULL after freeing. Enable memory sanitizers.
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
uiutil.c in FontForge through 20170731 does not validate strings before launching the program specified by the BROWSER e
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 weakness CWE-416 – Use After Free
View allSame technique Use After Free
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External POC / Exploit Code
Leaving vuln.today