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Fedora 43 ProFTPD Important SQL Injection Risk CVE-2026-42167

fedora
Calendar Grey May 8, 2026
Dist Fedora Esm H88
ProFTPD in Fedora 43 fixes an important SQL injection issue through mod_sql, ensuring server security and stability.
Cumulative bug-fix release from upstream

Summary

ProFTPD is an enhanced FTP server with a focus toward simplicity, security,

and ease of configuration. It features a very Apache-like configuration

syntax, and a highly customizable server infrastructure, including support for

multiple 'virtual' FTP servers, anonymous FTP, and permission-based directory

visibility.

This package defaults to the standalone behavior of ProFTPD, but all the

needed scripts to have it run by systemd instead are included.

Update Information:

Cumulative bug-fix release from upstream. Includes fix for a possible SQL- injection issue via mod_sql (CVE-2026-42167). Note that mod_sql is not enabled by default.

Change Log

* Thu Apr 30 2026 Paul Howarth - 1.3.9a-1 - Update to 1.3.9a - SCP transfers failed for files with spaces in their names (GH#1886) - LDAPDefaultGID ignored since 1.3.9 (GH#1898) - Compilation of mod_wrap2 failed when the --enable-wrapper-options configure option was used (Bug #4512) - mod_sftp failed to parse authorized user/host public keys with CRLF line endings (GH#1904) - Uploads using MODE Z sometimes resulted in corrupted files or broken transfers (GH#1896) - Remove usage of the deprecated MySQL_OPT_RECONNECT option for newer MySQL versions (GH#1911) - Update usage of MySQL API for SSL/TLS connections to server (GH#340) - mod_sftp leaked file descriptor when reading SFTPHostKey file (GH#1959) - Large/slow SCP downloads could be unnecessarily truncated by TimeoutStalled (GH#1964) - Handling of CRLs in mod_tls was incorrect, leading to confusing errors (GH#1960) - Resumed SSL_SESSION management in mod_tls lead to memory growth, infinite loop using newer OpenSSL versions (GH#1963) - mod_quotatab_ldap interactions could lead to segfault due to stale pointer (GH#1984) - RNTO before authentication lead to out-of-order response codes (GH#2003) - MaxLoginAttemptsFromUser event never triggered in mod_ban for SFTP sessions (GH#2009) - Using toupper(3) on non-ASCII FTP command bytes might cause remote DoS (GH#2019) - Out-of-bounds single byte read when FTP command input buffer starts with LF (GH#2020) - FTP command LIST/NLST -B could cause buffer overflow when listing certain crafted filenames (GH#2030) - Memory exhaustion with mod_log_forensic when downloading very large files via SFTP (GH#2043) - Setting process groups during authentication crashed when using mod_radius and (GH#2046) - SQL injection possible via mod_sql because of is_escaped_text() logic error (GH#2052, CVE-2026-42167) * Sat Jan 17 2026 Fedora Release Engineering - 1.3.9-3 - Rebuilt for https://fedoraproject.org/wiki/Fedora_44_Mass_Rebuild

References


[ 1 ] Bug #2466604 - CVE-2026-42167 proftpd: SQL injection due to logic error in is_escaped_text() [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2466604

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-bdb9342c72' 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
important
Lowest
Low
Medium
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Critical

Name: proftpd
Product: Fedora 43
Version: 1.3.9a
Release: 1.fc43
Summary: Flexible, stable and highly-configurable FTP server

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