Use-after-free - CVE-2019-11471

Vulnerability identifier: #VU33031

CSH Severity: High

CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2019-11471

CWE-ID: CWE-416

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

libheif 1.4.0 has a use-after-free in heif::HeifContext::Image::set_alpha_channel in heif_context.h because heif_context.cc mishandles references to non-existing alpha images.

libheif (Alpine package)
libreoffice (Alpine package)
heif-gdk-pixbuf (Ubuntu package)
libheif-dev (Ubuntu package)
libheif1 (Ubuntu package)
libheif-plugin-libde265 (Ubuntu package)
Ubuntu

Install update from vendor's website.

libheif (Alpine package) - update to 1.5.0-r0
libreoffice (Alpine package) - update to 6.2.6.2-r0
heif-gdk-pixbuf (Ubuntu package) - addressed in versions Ubuntu Pro, 1.16.2-2ubuntu1.1
libheif-dev (Ubuntu package) - addressed in versions Ubuntu Pro, 1.16.2-2ubuntu1.1
libheif1 (Ubuntu package) - addressed in versions Ubuntu Pro, 1.16.2-2ubuntu1.1
libheif-plugin-libde265 (Ubuntu package) - update to 1.16.2-2ubuntu1.1

• https://github.com/strukturag/libheif/commit/995a4283d8ed2d0d2c1ceb1a577b993df2f0e014
• https://github.com/strukturag/libheif/issues/123

• Use-after-free in libheif (Alpine package)
• Ubuntu update for libheif