CVE Vulnerabilities


Improper Link Resolution Before File Access ('Link Following')

Published: Jan 28, 2014 | Modified: Aug 29, 2017
CVSS 3.x
CVSS 2.x
3.3 LOW

syncevo/ in syncevolution before uses mktemp to create a safe temporary file but appends a suffix to the original filename and writes to this new filename, which allows local users to overwrite arbitrary files via a symlink attack on the new filename.


The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

Affected Software

Name Vendor Start Version End Version
Syncevolution Debian *
Syncevolution Ubuntu artful *
Syncevolution Ubuntu lucid *
Syncevolution Ubuntu precise *
Syncevolution Ubuntu quantal *
Syncevolution Ubuntu saucy *
Syncevolution Ubuntu trusty *
Syncevolution Ubuntu utopic *
Syncevolution Ubuntu vivid *
Syncevolution Ubuntu vivid/stable-phone-overlay *
Syncevolution Ubuntu wily *
Syncevolution Ubuntu yakkety *
Syncevolution Ubuntu zesty *

Potential Mitigations

  • Follow the principle of least privilege when assigning access rights to entities in a software system.
  • Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.