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Ubuntu 12.04 ESM USN-3506-2 Critical: Rsync Access Control Issues

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Calendar Grey December 7, 2017
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Important patch for Ubuntu correcting various rsync permission vulnerabilities reported in December 2017. Protect your system today.
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:

USN-3506-1 fixed two vulnerabilities in rsync. This update provides

the corresponding update for Ubuntu 12.04 ESM.

Original advisory 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 critical access control Ubuntu rsync January 2017

Update Instructions

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

Ubuntu 12.04 ESM:
  rsync                           3.0.9-1ubuntu1.2

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

References

  https://ubuntu.com/security/notices/USN-3506-2

  https://ubuntu.com/security/notices/USN-3506-1

  CVE-2017-17433, CVE-2017-17434

Severity
critical
Lowest
Low
Medium
High
Critical

December 07, 2017

Topics%20covered

Topics Covered

security advisory critical access control Ubuntu rsync January 2017

Package Information

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