#VU17200 Memory leak in OpenSC - CVE-2019-6502

Vulnerability identifier: #VU17200

Vulnerability risk: Low

CVSSv4.0: 0.9 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2019-6502

CWE-ID: CWE-401

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
OpenSC
Universal components / Libraries / Libraries used by multiple products

Vendor: OpenSC

Description
The vulnerability allows a local user to perform DoS attack on the target system.

The vulnerability exists due memory leak in sc_context_create in ctx.c in libopensc. A local user can trigger memory leak and perform denial of service attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

OpenSC: 0.4.0 - 0.19.0

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External links
https://github.com/OpenSC/OpenSC/issues/1586
https://github.com/OpenSC/OpenSC/releases/tag/0.20.0

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Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.