USN-3506-2: rsync vulnerabilities

USN-3506-2: rsync vulnerabilities

Ubuntu Security Notice USN-3506-2

7th December, 2017

rsync vulnerabilities

A security issue affects these releases of Ubuntu and its
derivatives:

  • Ubuntu 12.04 LTS

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)

Update instructions

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

Ubuntu 12.04 LTS:
rsync

3.0.9-1ubuntu1.2

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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

References

CVE-2017-17433,

CVE-2017-17434

Source: USN-3506-2: rsync vulnerabilities

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