Use-after-free in OpenSC - CVE-2019-19480
Published: December 30, 2019
Vulnerability identifier: #VU23846
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-19480
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: OpenSC
Affected software:
OpenSC
OpenSC
Detailed vulnerability description
The vulnerability allows a local user to compromise vulnerable system.
The vulnerability exists due to a use-after-free error within the sc_pkcs15_decode_prkdf_entry() function in libopensc/pkcs15-prkey.c. A local user can pass specially crafted data to the application, trigger a use-after-free error and execute arbitrary code on the system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
How to mitigate CVE-2019-19480
Install updates from vendor's website.