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Slackware 15.0: httpd Critical DoS and Access Control Fix SSA:2025-204-01

slackware
Calendar Grey July 23, 2025
Dist Slackware Esm H88
Urgent security patches for nginx in Slackware 15.0 tackling severe DDoS vulnerabilities and user permission flaws.
New httpd packages are available for Slackware 15.0 and -current to fix security issues

Summary

Here are the details from the Slackware 15.0 ChangeLog: patches/packages/httpd-2.4.65-i586-1_slack15.0.txz: Upgraded. This release fixes bugs and the following security issues: HTTP/2 DoS by Memory Increase. mod_ssl TLS upgrade attack. mod_proxy_http2 denial of service. mod_ssl access control bypass with session resumption. mod_ssl error log variable escaping. SSRF on Windows due to UNC paths (Linux is not affected). SSRF with mod_headers setting Content-Type header. HTTP response splitting. For more information, see: https://www.cve.org/CVERecord?id=CVE-2025-53020 https://www.cve.org/CVERecord?id=CVE-2025-49812 https://www.cve.org/CVERecord?id=CVE-2025-49630 https://www.cve.org/CVERecord?id=CVE-2025-23048 https://www.cve.org/CVERecord?id=CVE-2024-47252 https://www.cve.org/CVERecord?id=CVE-2024-43394 https://www.cve.org/CVERecord?id=CVE-2024-43204 https://www.cve.org/CVERecord?id=CVE-2024-42516 (* Security fix *)

Topics%20covered

Topics Covered

security advisory critical access control DoS httpd slackware

Where Find New Packages

Thanks to the friendly folks at the OSU Open Source Lab (http://osuosl.org) for donating FTP and rsync hosting to the Slackware project! :-)
Also see the "Get Slack" section on http://www.slackware.com/ for additional mirror sites near you.
Updated package for Slackware 15.0: ftp://ftp.slackware.com/pub/slackware/slackware-15.0/patches/packages/httpd-2.4.65-i586-1_slack15.0.txz
Updated package for Slackware x86_64 15.0: ftp://ftp.slackware.com/pub/slackware/slackware64-15.0/patches/packages/httpd-2.4.65-x86_64-1_slack15.0.txz
Updated package for Slackware -current: ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/httpd-2.4.65-i686-1.txz
Updated package for Slackware x86_64 -current: ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/n/httpd-2.4.65-x86_64-1.txz

MD5 Signatures

Slackware 15.0 package: ebf0c0bea8b1ba4389ed9aa6dbbc575e httpd-2.4.65-i586-1_slack15.0.txz
Slackware x86_64 15.0 package: 3b07387d6b74a6c5683cb71a2064168d httpd-2.4.65-x86_64-1_slack15.0.txz
Slackware -current package: 2be9cb57b63487d6759844f85287234e n/httpd-2.4.65-i686-1.txz
Slackware x86_64 -current package: 98bc490f1760d137a16647e3374de7ce n/httpd-2.4.65-x86_64-1.txz

Severity
critical
Lowest
Low
Medium
High
Critical

Topics%20covered

Topics Covered

security advisory critical access control DoS httpd slackware

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Installation Instructions

Installation instructions: Upgrade the package as root: # upgradepkg httpd-2.4.65-i586-1_slack15.0.txz Then, restart Apache httpd: # /etc/rc.d/rc.httpd stop # /etc/rc.d/rc.httpd start