Buffer overflow in OpenSC - CVE-2018-16420
Published: December 27, 2018
Vulnerability identifier: #VU16735
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-16420
CWE-ID: CWE-120
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to boundary error when handling responses from an ePass 2003 Card in decrypt_response in libopensc/card-epass2003.c. A remote unauthenticated attacker can supply specially crafted smartcards, trigger memory corruption and cause the application to crash.
Affected software
OpenSC
opensc (Alpine package)
opensc
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for Scientific Computing
Opensuse
Fedora
opensc (Alpine package)
opensc
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for Scientific Computing
Opensuse
Fedora
How to mitigate CVE-2018-16420
Update to version 0.19.0-rc1.
OpenSC - update to 0.19.0 rc1
opensc (Alpine package) - update to 0.19.0-r0
opensc - addressed in versions 0.19.0-1.fc28, 0.19.0-1.fc29
opensc (Alpine package) - update to 0.19.0-r0
opensc - addressed in versions 0.19.0-1.fc28, 0.19.0-1.fc29