CVE-2021-34340 Memory corruption in ming

What is CVE-2021-34340?

CVE-2021-34340 is a medium-severity memory corruption vulnerability in Fedoraproject Fedora, published on 7 Mar 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Ming 0.4.8 has an out-of-bounds buffer access issue in the function decompileINCR_DECR() in decompiler.c file that causes a direct segmentation fault and leads to denial of service.

Weakness: CWE-787, CWE-125

Which versions are affected by CVE-2021-34340?

It affects 2 products.

Products include Fedoraproject Fedora, Libming Ming.

How do I fix CVE-2021-34340?

No fix has been published for CVE-2021-34340 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-2021-34340 being exploited?

There is no known exploitation of CVE-2021-34340 in the wild and no public exploit code.

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• CVE-2024-4947 Google Chromium V8 Type Confusion Exploited Critical 9.6
• CVE-2024-4671 Google Chromium Visuals Use-After-Free Exploited Critical 9.6

All Fedoraproject Fedora vulnerabilities

Sources

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

Also known as GHSA-79h4-6hc9-65cp, UBUNTU-CVE-2021-34340.