Affects all platforms supported by the vulnerable versions.
Information disclosure. Error message tells attackers when they have filled available attachment space. Does not affect Lite versions.
November 15, 2017
December 1, 2017
4.0.20 Patch Level 1
4.0.19 Patch Level 4
It is not possible to workaround this issue.
The versions listed below are known to be affected by this issue. If you are using one of those versions, you should update to a newer release that has no known vulnerabilities.
Prior to 4.0.19, Information Disclosures were not treated as security issues. In 4.0.19, known disclosures were fixed as standard bugs, with future disclosures to be treated as security issues. Thus, while a given Information Disclosure may exist in a prior version, only versions 4.0.19 and higher are listed, and only versions 4.0.19 and higher receive patches.