CVE Vulnerabilities

CVE-2020-5395

Use After Free

Published: Jan 03, 2020 | Modified: Nov 21, 2024
CVSS 3.x
8.8
HIGH
Source:
NVD
CVSS:3.1/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
8.8 MODERATE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Ubuntu
MEDIUM

FontForge 20190801 has a use-after-free in SFD_GetFontMetaData in sfd.c.

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

Name Vendor Start Version End Version
Fontforge Fontforge 20190801 (including) 20190801 (including)
Red Hat Enterprise Linux 7 RedHat fontforge-0:20120731b-13.el7 *
Red Hat Enterprise Linux 8 RedHat fontforge-0:20170731-14.el8 *
Fontforge Ubuntu bionic *
Fontforge Ubuntu disco *
Fontforge Ubuntu eoan *
Fontforge Ubuntu focal *
Fontforge Ubuntu groovy *
Fontforge Ubuntu trusty *
Fontforge Ubuntu xenial *

Potential Mitigations

References