CVE-2021-26252 Memory corruption in htmldoc

What is CVE-2021-26252?

CVE-2021-26252 is a high-severity memory corruption vulnerability in Fedoraproject Fedora, published on 24 Feb 2022. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

A flaw was found in htmldoc in v1.9.12. Heap buffer overflow in pspdf_prepare_page(),in ps-pdf.cxx may lead to execute arbitrary code and denial of service.

Weakness: CWE-787

Which versions are affected by CVE-2021-26252?

It affects 3 products.

Products include Fedoraproject Fedora, Htmldoc Project Htmldoc, Redhat Enterprise Linux.

How do I fix CVE-2021-26252?

Apply the vendor's patch.

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

Is CVE-2021-26252 being exploited?

There is no known exploitation of CVE-2021-26252 in the wild and no public exploit code.

Other vulnerabilities in Fedoraproject Fedora

• CVE-2024-4577 PHP-CGI OS Command Injection Exploited Critical 9.8
• CVE-2021-39226 Grafana Authentication Bypass Exploited Critical 9.8
• 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 DEBIAN-CVE-2021-26252, GHSA-xfrq-7xgg-w3v5, UBUNTU-CVE-2021-26252.