Gmail Messages Are Vulnerable To Interception

Michael Wally writes "GMail messages are vulnerable to interception. An attacker has only to transmit malformed test messages to himself, and information left over in memory, from previous messages destined for other people, will appear with the test messages, in the attacker's inbox. Sometimes, this information may include usernames and passwords... Do you use GMail? Are your communications private? Should they be? Well, here's what we figured out about the issue, that may or may not help you - or perhaps GMail, if anyone can get ahold of their developers, to tell them about it." Update: 01/12 22:21 GMT by T : Good news for Gmail users; those malformed messages are no longer being accepted; read below for a message from Chris DiBona.

chrisd writes "Just so you know, at 10:15am PST mails with the problematic formatting as described in your previous story stopped being accepted into Gmail. Previous emails that had this problem will also no longer will be accessible. If you don't mind, I'd like to take the time to remind Slashdot readers that they can send bugs that may have a security aspect into security@google.com. If they like, they should feel free to cc me at cdibona@google.com. We appreciate your patience and we're sorry about the bug."

Comments

A Darker Shade of Grey Hat

[American AC in Paris]

When you find a bug like this, you should first and foremost submit it to the party responsible for the maintenance of the code. You should at least give the responsible party the opportunity to review/respond/repair before making vulnerabilities public knowledge.

Security exploits are a serious matter, and they need to be handled properly. Throwing this kind of thing out in the open willy-nilly is, at best, irresponsible. For one, it means that Google must now rush a fix for something which may have already been in the bugfix queue; rush jobs can disrupt the entire project and increases the odds of human error--which can lead to unnecessary security vulnerabilities.

As for these guys getting hired by Google--being smarmy twits about Google's code review practices probably isn't gonna help their case any. Shame, because a little tact and professional courtesy would have given them a damn good running start at it...

Re:Security Category in Gmail Bugs List?

[innocent_white_lamb]

That depends entirely on the context.

The lock on a vault generally relies entirely on obscurity to obtain its security. You can't see how the cams are turning inside of the lock so you can't open it unless you know the combination. If you do know the combination, you can open the lock within a minute or so. If someone invents magic X-ray eye glasses that could see through the steel, then the standard mechanical combination lock would be useless.

The question at that point becomes how likely is it that this would ever happen?

In the case of a steel vault door, I submit it's fairly unlikely. In the case of a computer security scheme, on the other hand, ....