Suite à un gros bug, Saurik (Jay Freeman) a été contraint ce jeudi de désactiver les achats sur le Cydia Store.

Le bug découvert par Andy Wiik aurait en effet pu permettre des achats arbitraires de tweaks sur le Cydia Store via les comptes PayPal des utilisateurs s’ils étaient connectés à un compte Cydia avec un compte PayPal lié et parcouraient des sources tierces potentiellement malveillantes dans l’application. Cette découverte a d’ailleurs inquiété les développeurs ainsi que la communauté de jailbreak.

Face à cette situation, Saurik a tout simplement désactivé les achats dans le Cydia Store. Par conséquent, les utilisateurs n’ont plus la possibilité d’acheter de packages à partir des sources par défaut tels que BigBoss. En revanche, vous pouvez toujours accéder aux tweaks déjà achetés.

Saurik précise néanmoins qu’aucune données sensibles ou mot de passe PayPal n’ont été volées. À l’avenir, il est également conseillé d’utiliser seulement des sources de confiance où il y a notamment de nombreux avis positifs. Il faut se méfier des nouvelles sources aux risques de voir trop tard certains paiements PayPal effectués sans votre consentement.

Saurk a publié une réponse officielle suite à cette affaire :

« Unless you are logged in and using Cydia while also browsing a repository with untrusted content (which, FWIW, is difficult to not do with Cydia <- I do appreciate this sad fact about the ecosystem: it was never clear to users that they should be careful installing random repositories), this is “not an issue”. As you would only ever be logged in to Cydia in order to actively buy something or download a paid purchase (Cydia, very much on purpose as a security feature of the software, does not cache login tokens when you close the app) and effectively no one is buying anything anymore (for multiple, even numerous!, reasons), this issue affects very few users despite being worded in a very vague way to, I would assume purposefully, cause maximal chaos and carnage, leading to questions that go so far as “how do I do this without being jailbroken”. If you are not jailbroken, you definitely should have no concern about this.

In particular, this vulnerability is not a data leak (as some people are wondering, and given the vague complaint from Nullpixel is a perfectly valid thing to be thinking: one would presume that I somehow lost access to PayPal authorization tokens allowing someone else to take money from your PayPal account: this categorically is not the issue at hand today), and there is definitely no need to go out of your way to disable tokens if you are not actually using Cydia anymore: it is “only” (in quotes as this is still a serious issue… if this were actually a product still being used by anyone ;P) the ability to force a purchase by a user who is currently logged in to Cydia; there is no concern about the information in your Cydia account that I know of at this time.

The reality is that I wanted to just shut down the Cydia Store entirely before the end of the year, and was considering moving the timetable up after receiving the report (to this weekend); this service loses me money and is not something I have any passion to maintain: it was a critical component of a healthy ecosystem, and for a while it helped fund a small staff of people to maintain the ecosystem, but it came at great cost to my sanity and led lots of people to irrationally hate me due to what amounted to a purposeful misunderstanding of how profit vs. revenue works. (That said, shutting this down doesn’t actually mitigate the majority of my costs right now, which involve many terabytes of bandwidth per month continuing to be spent on hosting the archived repositories I took on as my responsibility; I am thankfully currently making enough money from my new job to cover these costs.)

However, given the push from Nullpixel and Andy Wiik to do something about it this morning, I’ve had to reconsider my timelines; I have thereby gone ahead and shut down the ability to buy things in Cydia, effective immediately. I will put together a more formal post about the arc of Cydia, likely to be published next week. »

Saurik confirme qu’il maintiendra les achats précédents :

« I am intending to maintain the ability to download existing packages: the accounting and backend execution burden of this is much lower than continuing to allow purchases and removing the payment code means I don’t have to worry that I messed up anything else in the payment backend, security-wise. »

Si les achats sont toujours inactifs, il est important de souligner le sérieux de Saurik et sa réactivité afin d’éviter les problèmes. La situation restera ainsi jusqu’à ce que le bug soit corrigé. Ensuite, les utilisateurs pourront à nouveau acheter des tweaks en toute sécurité.

Rappelons au passage que le gestionnaire de paquets Sileo est toujours en développement et vise à remplacer Cydia en tant que principal installateur de paquets et gestionnaire de sources jailbreak. Pour l’heure, aucune date de sortie n’a encore été divulguée.

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