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Fedora 42: proxychains-ng Critical Update for CVE-2025-34451 DoS Attack

fedora
Calendar Grey January 6, 2026
Dist Fedora Esm H88
Update ProxyChains NG to fix CVE-2025-34451 critical DoS issue to enhance security measures on Fedora 42.
Update to master to fix CVE-2025-34451

Summary

ProxyChains NG is based on ProxyChains.

ProxyChains NG hooks network-related (TCP only) libc functions in dynamically

linked programs via a preloaded DSO (dynamic shared object) and redirects the

connections through one or more SOCKS4a/5 or HTTP proxies.

Since Proxy Chains NG relies on the dynamic linker, statically linked binaries

are not supported.

Update Information:

Update to master to fix CVE-2025-34451

Topics%20covered

Topics Covered

security advisory denial of service fedora buffer overflow critical proxychains-ng

Change Log

* Sun Dec 28 2025 Pablo Greco - 4.17-8 - Update to master to fix warning and add comment * Sat Dec 27 2025 Pablo Greco - 4.17-7 - Update to master to fix CVE-2025-34451 * Fri Jul 25 2025 Fedora Release Engineering - 4.17-6 - Rebuilt for https://fedoraproject.org/wiki/Fedora_43_Mass_Rebuild

References


[ 1 ] Bug #2423793 - CVE-2025-34451 proxychains-ng: proxychains-ng: Denial of Service due to stack-based buffer overflow via crafted proxy configuration [epel-10] https://bugzilla.redhat.com/show_bug.cgi?id=2423793 [ 2 ] Bug #2423794 - CVE-2025-34451 proxychains-ng: proxychains-ng: Denial of Service due to stack-based buffer overflow via crafted proxy configuration [epel-8] https://bugzilla.redhat.com/show_bug.cgi?id=2423794 [ 3 ] Bug #2423795 - CVE-2025-34451 proxychains-ng: proxychains-ng: Denial of Service due to stack-based buffer overflow via crafted proxy configuration [epel-9] https://bugzilla.redhat.com/show_bug.cgi?id=2423795 [ 4 ] Bug #2423796 - CVE-2025-34451 proxychains-ng: proxychains-ng: Denial of Service due to stack-based buffer overflow via crafted proxy configuration [fedora-42] https://bugzilla.redhat.com/show_bug.cgi?id=2423796 [ 5 ] Bug #2423797 - CVE-2025-34451 proxychains-ng: proxychains-ng: Denial of Service d...

Read the Full Advisory

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2025-ec760de8e2' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

Severity
critical
Lowest
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Critical

Name: proxychains-ng
Product: Fedora 42
Version: 4.17
Release: 8.fc42
URL: https://github.com/rofl0r/proxychains-ng
Summary: Redirect connections through proxy servers

Topics%20covered

Topics Covered

security advisory denial of service fedora buffer overflow critical proxychains-ng

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