NULL pointer dereference in libexif - CVE-2020-13113

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Main Vulnerability Database Vulnerabilities #VU28182

NULL pointer dereference in libexif - CVE-2020-13113

Published: May 22, 2020


Vulnerability identifier: #VU28182
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-13113
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in EXIF Makernote handling. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.


Affected software

libexif
Gentoo Linux
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux for IBM z Systems
Red Hat CodeReady Linux Builder for ARM 64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for x86_64
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for x86_64
Slackware Linux
Opensuse
openEuler
Fedora
libexif (Alpine package)
libexif (Ubuntu package)
libexif (Red Hat package)
libexif-help
libexif
libexif-debuginfo
libexif-devel
libexif-debugsource

How to mitigate CVE-2020-13113

Install updates from vendor's website.

libexif - update to 0.6.22
libexif (Alpine package) - update to 0.6.22-r0
libexif (Ubuntu package) - addressed in versions 0.6.21-2ubuntu0.5, 0.6.21-4ubuntu0.5, 0.6.21-5.1ubuntu0.5, 0.6.21-6ubuntu0.3
libexif (Red Hat package) - addressed in versions 0.6.22-1.el7, 0.6.22-4.el8
libexif-help - update to 0.6.21-22
libexif - update to 0.6.21-22
libexif-debuginfo - update to 0.6.21-22
libexif-devel - update to 0.6.21-22
libexif-debugsource - update to 0.6.21-22
libexif - addressed in versions 0.6.22-1.fc31, 0.6.22-1.fc32

External References

Related Security Bulletins