Google Fixes Serious Vulnerability in Gmail

Outsmart Malicious Hackers


Google started the new year by fixing a serious vulnerability in Gmail.

This was quite an interesting case and once again (as everything relating to web apps seems to be nowdays) it was an XSS flaw that allowed malicious attackers to steal your contact list, leading to some pretty bad information leakage.

Google has fixed a vulnerability in its popular GMail web mail service that creates a means for hackers to steal users’ contact lists.

The cross-site scripting flaw stemmed from the decision by GMail to store contact lists in a JavaScript file. GMail always saves contact lists as JavaScript code using the same URL, so a script featuring this URL can read out the fields of a users’ contact list. GMail failed to check what sites were attempting to run this “callback” function.

There was a previous very similar flaw on Google which effected computers with multiple Gmail users.

As a result users logged into GMail, or other Google services sharing the same login, are liable to hand over their contact list to spammers or other miscreants providing they are tricked into visiting a maliciously constructed website. Exploitation would have been as simple as fooling users into visiting a hostile website through spam messages sent to users’ email accounts.

Coders failed to take into account that it was a bad idea to save sensitive data as JavaScript, under predictable URLs, a problem Google watchers spotted shortly after Google made the coding changes last week

I do like Google though, they tend to fix things pretty fast!

Source: The Register

Posted in: Exploits/Vulnerabilities, Web Hacking

, , , , , ,


Latest Posts:


DAST vs SAST - Dynamic Application Security Testing vs Static DAST vs SAST – Dynamic Application Security Testing vs Static
In security testing, much like most things technical there are two very contrary methods, Dynamic Application Security Testing or DAST and Static or SAST.
Cr3dOv3r - Credential Reuse Attack Tool Cr3dOv3r – Credential Reuse Attack Tool
Cr3dOv3r is a fairly simple Python-based set of functions that carry out the prelimary work as a credential reuse attack tool.
Mr.SIP - SIP Attack And Audit Tool Mr.SIP – SIP Attack And Audit Tool
Mr.SIP was developed in Python as a SIP Attack and audit tool which can emulate SIP-based attacks. Originally it was developed to be used in academic work.
Uber Paid Hacker To Hide 57 Million User Data Breach Uber Paid Hackers To Hide 57 Million User Data Breach
Uber is not known for it's high level of ethics, but it turns out Uber paid hackers to not go public with the fact they'd breached 57 Million accounts.
RDPY - RDP Security Tool For Hacking Remote Desktop Protocol RDPY – RDP Security Tool For Hacking Remote Desktop Protocol
RDPY is an RDP Security Tool in Twisted Python with RDP Man in the Middle proxy support which can record sessions and Honeypot functionality.
Terabytes Of US Military Social Media Spying S3 Data Exposed Terabytes Of US Military Social Media Spying S3 Data Exposed
Once again the old, default Amazon AWS S3 settings are catching people out, the US Military has left terabytes of social media spying S3 data exposed.


Comments are closed.