Use-after-free in Ghostscript - CVE-2020-14373

Vulnerability identifier: #VU46585

CSH Severity: Low

CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-14373

CWE-ID: CWE-416

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local authenticated user to perform a denial of service (DoS) attack.

A use after free was found in igc_reloc_struct_ptr() of psi/igc.c of ghostscript-9.25. A local attacker could supply a specially crafted PDF file to cause a denial of service.

Ghostscript
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Red Hat CodeReady Linux Builder for x86_64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for ARM 64
ghostscript (Red Hat package)

Install update from vendor's website.

ghostscript (Red Hat package) - update to 9.27-1.el8

• https://bugs.ghostscript.com/show_bug.cgi?id=702851
• https://bugzilla.redhat.com/show_bug.cgi?id=1873239
• https://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=ece5cbbd9979cd35737b00e68267762d72feb2ea;hp=1ef5f08f2c2e27efa978f0010669ff22355c385f

• Red Hat Enterprise Linux 8 update for ghostscript