CVE-2011-1588
📋 TL;DR
Thunar file manager versions before 1.3.1 contain a format string vulnerability when handling file names with percent characters. This could allow an attacker to crash the application or potentially execute arbitrary code by tricking a user into copying and pasting a malicious file name. Users of Thunar on Linux systems are affected.
💻 Affected Systems
- Thunar file manager
📦 What is this software?
Opensuse by Opensuse
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with user privileges if format string exploitation leads to arbitrary code execution.
Likely Case
Application crash (denial of service) when processing specially crafted file names.
If Mitigated
No impact if patched version is used or workarounds prevent exploitation.
🎯 Exploit Status
Exploitation requires user interaction (copy/paste action). Proof of concept demonstrates crash via format string error.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Thunar 1.3.1 and later
Vendor Advisory: http://lists.opensuse.org/opensuse-security-announce/2011-05/msg00008.html
Restart Required: No
Instructions:
1. Update Thunar to version 1.3.1 or later using your distribution's package manager. 2. For Red Hat/CentOS: yum update thunar. 3. For Debian/Ubuntu: apt-get update && apt-get install thunar. 4. Verify version after update.
🔧 Temporary Workarounds
Avoid suspicious file operations
linuxInstruct users not to copy/paste file names from untrusted sources
Use alternative file manager
linuxTemporarily use Nautilus, Dolphin, or other file managers until patched
🧯 If You Can't Patch
- Restrict user access to Thunar for untrusted users
- Implement application whitelisting to prevent Thunar execution
🔍 How to Verify
Check if Vulnerable:
Check Thunar version: thunar --version | grep -i versionCheck Version:
thunar --versionVerify Fix Applied:
Verify version is 1.3.1 or higher: thunar --version📡 Detection & Monitoring
Log Indicators:
- Thunar crash logs in system logs
- Segmentation fault errors related to Thunar
Network Indicators:
- No network indicators - local exploitation only
SIEM Query:
process_name:"thunar" AND (event_type:"crash" OR error:"segmentation fault")🔗 References
- http://lists.opensuse.org/opensuse-security-announce/2011-05/msg00008.html
- https://access.redhat.com/security/cve/cve-2011-1588
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-1588
- https://github.com/xfce-mirror/thunar/blob/master/NEWS#L774
- https://github.com/xfce-mirror/thunar/commit/03dd312e157d4fa8a11d5fa402706ae5b05806fa
- https://security-tracker.debian.org/tracker/CVE-2011-1588
- http://lists.opensuse.org/opensuse-security-announce/2011-05/msg00008.html
- https://access.redhat.com/security/cve/cve-2011-1588
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-1588
- https://github.com/xfce-mirror/thunar/blob/master/NEWS#L774
- https://github.com/xfce-mirror/thunar/commit/03dd312e157d4fa8a11d5fa402706ae5b05806fa
- https://security-tracker.debian.org/tracker/CVE-2011-1588
