Our only avenue is public education to keep users from continuing to risk their sensitive photos, videos, and voice messages.
While we hate any situation that necessitates full disclosure, our ability to address this is very limited without cooperation from GOMO and GO SMS Pro. We've also seen underground forums sharing images downloaded from GO SMS servers directly.įigure 3: One of many available exploit scriptsįigure 4: GO SMS vulnerability discussed in underground forums Several popular tools are updating daily and on their third or fourth revision. There have been more tools and scripts released to exploit this on sites like Pastebin and Github than you can shake a stick at. Unfortunately, we've seen a lot of activity around this vulnerability.
That includes quite a bit of sensitive data like driver's licenses, health insurance account numbers, legal documents, and of course, pictures of a more "romantic" nature.įigure 2: Some samples of the type of media leaked by GO SMS Pro So it appears they are in the process of trying to fix the root problem.įigure 1: MMS texts sent using GO SMS Pro v7.94ĭespite these half fixes, we can confirm that older media used to verify the original vulnerability is still available. The sender of any files will see something similar to Figure 1 however, the recipient does not receive any actual text either with or without attached media. In v7.94, they are not blocking the ability to upload media in the app, but the media does not appear to go anywhere.
We were not even able to attach files to an MMS message. For v7.93, it appears that they disabled the ability to send media files completely. It seems like GOMO is attempting to fix the issue, but a complete fix is still not available in the app.
Trustwave SpiderLabs tested both versions of the software released since our advisory, specifically v7.93 and v7.94. However, as of Monday, November 23rd, Google has reinstated the Play Store app with an updated version that same day. While it's not directly possible to link the media to specific users, those media files with faces, names, or other identifying characteristics do that for you.Ī new version of the app was uploaded to the Play Store the day before we released our advisory and Google then removed the app from the Play Store sometime on Friday, November 20th, the day after we released our advisory. With some very minor scripting, it is trivial to throw a wide net around that content. Media files sent via text in the app are stored insecurely on a publicly accessible server. For more details, visit m./ads/ad_choices.Last week we released an advisory about an SMS app called GO SMS Pro.
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