1000 εφαρμογές του App store έχουν σοβαρό κενό ασφαλείας. Μάθε αν κινδυνεύει το 
iPhone/iPad σου και τα δεδομένα σου!


Μεγάλο κενό ασφαλείας επηρεάζει περίπου 1000 iOS εφαρμογές του App store 
καθιστώντας τες ευάλωτες σε κακόβουλες επιθέσεις, σύμφωνα με πρόσφατη έκθεση 
της SourceDNA.

Το κενό ασφαλείας εντοπίστηκε πριν περίπου 1 μήνα και διορθώθηκε με αναβάθμιση 
σε συγκεκριμένο open source library που χρησιμοποιεί πολύ μεγάλη μερίδα των 
developers, ωστόσο όπως φαίνεται υπάρχουν περίπου 1000 apps που παραμένουν 
ευάλωτα.

AFNetworking recently had a major security flaw. Due to lack of SSL cert 
validation, the proverbial coffee shop attacker could easily bypass SSL and see 
all your app’s user credentials and banking data. We decided to track down apps 
that were still using the vulnerable version of AFNetworking and notify their 
developers so they could patch the flaw.

First, we had to determine the vulnerability window. We found the AFNetworking 
flaw was present in the Github repo from January 24 through March 25. More 
importantly, it had been released as version 2.5.1on February 12 before being 
fixed in version 2.5.2. Any developer who updated their app during that window 
could have integrated the vulnerable library.

We then uploaded three versions of AFNetworking: before, during, and after the 
flaw. SourceDNA created a differential fingerprint from them to find the 
vulnerable code. Think of this as a set of unique characteristics that were 
present or absent only in the targeted version and not any others before or 
after it. With this set of signatures, our analysis engine would tell us 
exactly which version of AFNetworking was in use in each app.

We currently track AFNetworking, along with about 1,500 other commercial and 
open-source SDKs. This includes code written in Java, Objective-C, Swift, 
C/C++, C#, Lua, and JavaScript for libraries that provide analytics, game 
engines, ads, payments, and every other service. This data helps platform 
vendors track their market share versus competitors and plan their product 
roadmap.

The day the flaw was announced & patched, a quick search in SourceDNA showed 
about 20,000 iOS apps (out of the 100k apps that use AFNetworking) both 
contained the AFNetworking library and were updated or released on the App 
Store after the flawed code was committed. Our system then scanned those apps 
with the differential signatures to see which ones actually had the vulnerable 
code.

The results? 55% had the older but safe 2.5.0 code, 40% were not using the 
portion of the library that provides the SSL API, and 5% or about 1,000 apps 
had the flaw.

Are these apps important? We compared them against our rank data and found some 
big players: Yahoo!, Microsoft, Uber, Citrix, etc. It amazes us that an 
open-source library that introduced a security flaw for only 6 weeks exposed 
millions of users to attack.

Στο link που ακολουθεί μπορείτε να ψάξετε τις εφαρμογές που έχετε 
εγκατεστημένες και να ενημερωθείτε για το αν κάποια από αυτές διαθέτει το εν 
λόγω κενό ασφαλείας: searchlight.sourcedna.com

Σχολιασμός στο forum

About Vasilis Ananiadis

Ο ζωντανός θρύλος της Ελληνικής blogόσφαιρας, ο αβυσσαλέος master του SEO, o 
πρίγκηπας των Social Media, ο τυφώνας των Web Startups, ο οργασμός της 
ιντερνετικής επιτυχίας. Τώρα και στο twitter: @vananiadis

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