CVE-2020-24387 Memory corruption in n/a

What is CVE-2020-24387?

CVE-2020-24387 is a high-severity memory corruption vulnerability in Fedoraproject Fedora, published on 19 Oct 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in the yh_create_session() function of yubihsm-shell through 2.0.2. The function does not explicitly check the returned session id from the device. An invalid session id would lead to out-of-bounds read and write operations in the session array. This could be used by an attacker to cause a denial of service attack.

Weakness: CWE-787, CWE-125

Which versions are affected by CVE-2020-24387?

It affects 2 products.

Products include Fedoraproject Fedora, Yubico Yubihsm-Shell.

How do I fix CVE-2020-24387?

No fix has been published for CVE-2020-24387 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2020-24387 being exploited?

There is no known exploitation of CVE-2020-24387 in the wild and no public exploit code.

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All Fedoraproject Fedora vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-f3q9-v3p2-wx3q.