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Ubuntu 17.10: USN-3506-1 Moderate: Rsync Access Bypass Threat

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Calendar Grey December 7, 2017
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Multiple vulnerabilities in rsync addressed according to Ubuntu Security Advisory USN-3506-1 across different releases. Ensure your system is secure!
Several security issues were fixed in rsync.

Summary

Several security issues were fixed in rsync.

Software Description:

- rsync: fast, versatile, remote (and local) file-copying tool

Details:

It was discovered that rsync proceeds with certain file metadata

updates before checking for a filename. An attacker could use this to

bypass access restrictions. (CVE-2017-17433)

It was discovered that rsync does not check for fnamecmp filenames and

also does not apply the sanitize_paths protection mechanism to

pathnames. An attacker could use this to bypass access restrictions.

(CVE-2017-17434)

Topics%20covered

Topics Covered

security advisory moderate update rsync ubuntu access restriction file copying

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 17.10:
  rsync                           3.1.2-2ubuntu0.1

Ubuntu 17.04:
  rsync                           3.1.2-1ubuntu0.1

Ubuntu 16.04 LTS:
  rsync                           3.1.1-3ubuntu1.1

Ubuntu 14.04 LTS:
  rsync                           3.1.0-2ubuntu0.3

In general, a standard system update will make all the necessary
changes.

References

 

  CVE-2017-17433, CVE-2017-17434

December 07, 2017

Topics%20covered

Topics Covered

security advisory moderate update rsync ubuntu access restriction file copying

Package Information

  https://launchpad.net/ubuntu/+source/rsync/3.1.2-2ubuntu0.1
  https://launchpad.net/ubuntu/+source/rsync/3.1.2-1ubuntu0.1
  https://launchpad.net/ubuntu/+source/rsync/3.1.1-3ubuntu1.1
  https://launchpad.net/ubuntu/+source/rsync/3.1.0-2ubuntu0.3

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