CVE-2023-6277 Libtiff: out-of-memory in tiffopen via a craft file

What is CVE-2023-6277?

CVE-2023-6277 is a medium-severity denial of service vulnerability in Fedoraproject Fedora, published on 24 Nov 2023. 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

An out-of-memory flaw was found in libtiff. Passing a crafted tiff file to TIFFOpen() API may allow a remote attacker to cause a denial of service via a craft input with size smaller than 379 KB.

Weakness: CWE-400

Which versions are affected by CVE-2023-6277?

It affects 2 products.

Products include Fedoraproject Fedora, Libtiff Libtiff.

How do I fix CVE-2023-6277?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2023-6277 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-6277 exists.

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• CVE-2019-5544 VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Exploited Critical 9.8
• 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 AZL-32049, AZL-34953, AZL-43624, AZL-44511, BELL-CVE-2023-6277, DEBIAN-CVE-2023-6277 and 7 more.