medium
4
CWE
400
Advisory Published
Updated

CVE-2011-0762

First published: Wed Mar 02 2011(Updated: )

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.

Credit: cret@cert.org

Affected SoftwareAffected VersionHow to fix
vsftpd project vsftpd<2.3.3
Ubuntu Linux=6.06
Ubuntu Linux=8.04
Ubuntu Linux=9.10
Ubuntu Linux=10.04
Ubuntu Linux=10.10
Fedoraproject Fedora=13
Fedoraproject Fedora=14
Fedoraproject Fedora=15
Debian GNU/Linux=5.0
Debian GNU/Linux=6.0
Debian GNU/Linux=7.0
openSUSE=11.2
openSUSE=11.3
openSUSE=11.4
SUSE Linux Enterprise Server=9
SUSE Linux Enterprise Server=10-sp3
SUSE Linux Enterprise Server=10-sp4
SUSE Linux Enterprise Server=11-sp1
Ubuntu=10.10
Ubuntu=9.10
Ubuntu=8.04
Ubuntu=10.04
Ubuntu=6.06
Fedora=13
Fedora=15
Fedora=14
Debian=5.0
Debian=7.0
Debian=6.0

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2011-0762?

    CVE-2011-0762 is classified as a denial of service vulnerability affecting multiple versions of vsftpd.

  • How do I fix CVE-2011-0762?

    To mitigate CVE-2011-0762, upgrade vsftpd to version 2.3.3 or later.

  • What software is affected by CVE-2011-0762?

    CVE-2011-0762 affects vsftpd versions prior to 2.3.3 and various Linux distributions including certain versions of Ubuntu, Fedora, Debian, and SUSE.

  • What type of attack does CVE-2011-0762 enable?

    CVE-2011-0762 allows remote authenticated users to create CPU consumption and process slot exhaustion through crafted glob expressions.

  • Is there a workaround for CVE-2011-0762?

    A temporary workaround for CVE-2011-0762 is to limit the number of allowed FTP sessions per user.

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