Packages
- vsftpd - FTP server written for security
Details
It was discovered that the 2.6.35 and earlier Linux kernel does not
properly handle a high rate of creation and cleanup of network namespaces,
which makes it easier for remote attackers to cause a denial of service
(memory consumption) in applications that require a separate namespace per
connection, like vsftpd. This update adjusts vsftpd to only use network
namespaces on kernels that are known to be not affected.
It was discovered that the 2.6.35 and earlier Linux kernel does not
properly handle a high rate of creation and cleanup of network namespaces,
which makes it easier for remote attackers to cause a denial of service
(memory consumption) in applications that require a separate namespace per
connection, like vsftpd. This update adjusts vsftpd to only use network
namespaces on kernels that are known to be not affected.
Update instructions
In general, a standard system update will make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 11.10 oneiric | vsftpd – 2.3.2-3ubuntu5.1 | ||
| 11.04 natty | vsftpd – 2.3.2-3ubuntu4.1 | ||
| 10.10 maverick | vsftpd – 2.3.0~pre2-4ubuntu2.3 | ||
| 10.04 lucid | vsftpd – 2.2.2-3ubuntu6.3 | ||
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