CVE-2021-30500 Null dereference in upx

What is CVE-2021-30500?

CVE-2021-30500 is a high-severity vulnerability in Fedoraproject Fedora, published on 26 May 2021. 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

Null pointer dereference was found in upx PackLinuxElf::canUnpack() in p_lx_elf.cpp,in version UPX 4.0.0. That allow attackers to execute arbitrary code and cause a denial of service via a crafted file.

Weakness: CWE-476

Which versions are affected by CVE-2021-30500?

It affects 3 products.

Products include Fedoraproject Fedora, Redhat Enterprise Linux, Upx Upx.

How do I fix CVE-2021-30500?

Upgrade to a fixed version.

Is CVE-2021-30500 being exploited?

There is no known exploitation of CVE-2021-30500 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-2021-30500, GHSA-5339-45c2-mh5v, UBUNTU-CVE-2021-30500.