PT-2020-18478 · Fontforge+3 · Fontforge+3

Fcambus · Published 2020-01-03 · Updated 2024-03-08 · CVE-2020-5496

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions FontForge version 20190801

Description The issue is a heap-based buffer overflow in the Type2NotDefSplines() function in splinesave.c. This occurs due to improper handling of data, leading to a potential overflow.

Recommendations For FontForge version 20190801, as a temporary workaround, consider disabling the Type2NotDefSplines() function until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

ALT-PU-2020-1542

CVE-2020-5496

DLA-3754-1

MGASA-2020-0057

OPENSUSE-SU-2020:0089-1

OPENSUSE-SU-2020_0089-1

SUSE-SU-2020:0118-1

SUSE-SU-2020:0393-1

Affected Products

Alt Linux

Astra Linux

Fontforge

Suse

References · 25

• 🔥 https://github.com/fontforge/fontforge/issues/4085 · Exploit
• https://advisories.mageia.org/MGASA-2020-0057.html · Security Note
• https://cve.org/CVERecord?id=CVE-2020-5496 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2020:0089-1 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00041.html · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-5496 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2020:0393-1 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-3754-1 · Vendor Advisory
• https://security.gentoo.org/glsa/202004-14 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-5496 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-5496 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2020-0057 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2020-5496 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-5496 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-5496 · Security Note