CVE-2010-3438
📋 TL;DR
This vulnerability in libpoe-component-irc-perl allows attackers to inject arbitrary IRC commands by exploiting improper input sanitization of carriage returns and line feeds. When exploited, it can force IRC clients to disconnect or potentially execute other IRC commands. Users of affected versions of the Perl IRC component library are at risk.
💻 Affected Systems
- libpoe-component-irc-perl
📦 What is this software?
Fedora by Fedoraproject
Fedora by Fedoraproject
Libpoe Component Irc Perl by Libpoe Component Irc Perl Project
⚠️ Risk & Real-World Impact
Worst Case
Attackers could execute arbitrary IRC commands on vulnerable clients, potentially leading to client disconnection, channel takeover, or further exploitation through IRC protocol manipulation.
Likely Case
IRC clients disconnect unexpectedly when receiving malicious messages, causing service disruption and potential denial of service.
If Mitigated
With proper input validation and patching, the vulnerability is eliminated and no exploitation is possible.
🎯 Exploit Status
Exploitation requires sending specially crafted messages to vulnerable IRC clients.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.32 and later
Vendor Advisory: https://security-tracker.debian.org/tracker/CVE-2010-3438
Restart Required: Yes
Instructions:
1. Update libpoe-component-irc-perl to version 6.32 or later using your package manager. 2. Restart any applications using the library.
🔧 Temporary Workarounds
Input validation filter
allImplement custom input validation to strip carriage returns and line feeds from IRC messages
# In Perl code, add: $message =~ s/\r|\n//g; before processing IRC messages
🧯 If You Can't Patch
- Implement network filtering to block malicious IRC traffic containing carriage returns/line feeds
- Monitor IRC client logs for unexpected disconnections or unusual command patterns
🔍 How to Verify
Check if Vulnerable:
Check installed version: dpkg -l | grep libpoe-component-irc-perl or rpm -qa | grep libpoe-component-irc-perlCheck Version:
perl -MPOE::Component::IRC -e 'print $POE::Component::IRC::VERSION'Verify Fix Applied:
Verify version is 6.32 or higher: perl -MPOE::Component::IRC -e 'print $POE::Component::IRC::VERSION'📡 Detection & Monitoring
Log Indicators:
- Unexpected IRC client disconnections
- IRC messages containing \r or \n characters
Network Indicators:
- IRC protocol traffic with embedded carriage returns or line feeds in message content
SIEM Query:
source="irc.log" AND ("\r" OR "\n") AND NOT expected_pattern🔗 References
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=581194
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2010-3438
- https://security-tracker.debian.org/tracker/CVE-2010-3438
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=581194
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2010-3438
- https://security-tracker.debian.org/tracker/CVE-2010-3438
