CVE-2011-0762
MediumPublic exploitThe vsf_filename_passes_filter function in ls.c in vsftpd before 2.3.3 allows remote authenticated users to cause a denial of service (CPU consumption and process slot exhaustion) via crafted glob expressions in STAT commands in multiple FTP sessions, a different vulnerability…
Published Mar 2, 2011 · Updated Aug 4, 2026 · Also known as DEBIAN-CVE-2011-0762, DSA-2305-1
Key Facts
Patch immediately- CVE-2011-0762 is a medium-severity vulnerability (CVSS 4.0 v2) affecting Vsftpd (Vsftpd Project), Ubuntu Linux (Canonical), Debian Linux and 3 more products.
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 74% probability of exploitation in the next 30 days.
- Fixed versions are available, including Vsftpd 0:2.0.1-9.el4, Vsftpd 0:2.0.5-16.el5_6.1, Vsftpd 0:2.2.2-6.el6_0.1.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v2
4.0
AV:N/AC:L/Au:S/C:N/I:N/A:P
EPSS (30-day exploit likelihood)
74%
Higher than 99.4% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2011-0762 brief as a PDF
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Description
The vsf_filename_passes_filter function in ls.c in vsftpd before 2.3.3 allows remote authenticated users to cause a denial of service (CPU consumption and process slot exhaustion) via crafted glob expressions in STAT commands in multiple FTP sessions, a different vulnerability than CVE-2010-2632.
Affected Products
35 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| VsftpdVsftpd Project | See advisory | 2.3.3 |
| Ubuntu LinuxCanonical | 10.04, 10.10, 6.06, 8.04, 9.10 | n/a |
| Debian LinuxDebian | 5.0, 6.0, 7.0 | n/a |
| FedoraFedoraproject | 13, 14, 15 | n/a |
| OpensuseOpensuse | 11.2, 11.3, 11.4 | n/a |
Patched Releases
Vsftpd
0:2.0.1-9.el4, 0:2.0.5-16.el5_6.1, 0:2.2.2-6.el6_0.1, 2.0.5-16.el5_6.1, 2.0.7-1+lenny1, 2.2.2-6.el6_0.1, 2.3.2-3+squeeze2, 2.3.4-1, 2.3.3
Timeline
Publicly disclosed
Mar 2, 2011
Last updated
Aug 4, 2026
Weakness Type
- CWE-400 Uncontrolled Resource Consumption
References
- advisoryhttp://bugs.debian.org/cgi-bin/bugreport.cgi?bug=622741
- advisoryJVN#37417423
- advisoryFEDORA-2011-2615
- advisoryFEDORA-2011-2590
- advisoryFEDORA-2011-2567
FAQ
Common Questions.
The vsf_filename_passes_filter function in ls.c in vsftpd before 2.3.3 allows remote authenticated users to cause a denial of service (CPU consumption and process slot exhaustion) via crafted glob expressions in STAT commands in multiple FTP sessions, a different vulnerability than CVE-2010-2632.
Affected: Vsftpd (Vsftpd Project); Ubuntu Linux (Canonical) versions 10.04, 10.10, 6.06, 8.04, 9.10; Debian Linux versions 5.0, 6.0, 7.0, among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Vsftpd 0:2.0.1-9.el4, Vsftpd 0:2.0.5-16.el5_6.1, Vsftpd 0:2.2.2-6.el6_0.1.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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