Mail application error affects every iPhone

The bug in Apple's default Mail app has been on both iPhone 2Gs running iOS 3.1.3 since 2010.

MailDemon is considered one of the longest unpatched vulnerabilities on Apple phones. At the end of April, ZecOps security experts said this vulnerability allows hackers to silently attack iPhones and iPads running iOS 6 (September 2012), from iPhone 5 onwards, to the latest iOS, through Mail application. Meaning, half a billion iPhones and iPads are at risk of being hacked via email.

However, at the time, ZecOps admitted that it had not tested the devices running iOS 5 before, so it is still possible that the error will affect the older version.

This weekend, the security team posted a new post on the blog, saying there are signs that MailDemon appears on an iPhone 2G running iOS 3.1.3 since October 2010, which means the vulnerability exists a little. Best 8 years on the iPhone generation that Apple has not been overcome.

Email vulnerability affects every iPhone user. Photo: 9to5mac.

In many common attacks, hackers lure victims into clicking on a link to download malicious code. However, the flaw in the iOS Mail app "helps" hackers install malware without requiring the victim to manipulate any stage. Bad guys just need to send a specially crafted blank email. This email causes the device to crash and reboot, from which hackers can access and gain control of the device remotely.

ZecOps said the most noticeable sign was when clicking on an empty email, an iPhone or iPad was unusually slow due to a resource load. In addition, if the attack fails, the user will see the message: "This message contains no content".

Late last month, Apple acknowledged that the security flaw existed on the default email client, but said there was no evidence that the vulnerability was damaging to users. The company also promised to patch in the upcoming iOS 13.5 update. However, according to Forbes, the update only works on iPhone 6s and later, meaning that older generation smartphone users will not be protected. Not to mention, the iPhone 6 is still the most popular iPhone model in Apple history.