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2023-12-12 12:00:09 | Durcissant les bandes de base cellulaire dans Android Hardening cellular basebands in Android (lien direct) |
Posted by Ivan Lozano and Roger Piqueras Jover Android\'s defense-in-depth strategy applies not only to the Android OS running on the Application Processor (AP) but also the firmware that runs on devices. We particularly prioritize hardening the cellular baseband given its unique combination of running in an elevated privilege and parsing untrusted inputs that are remotely delivered into the device. This post covers how to use two high-value sanitizers which can prevent specific classes of vulnerabilities found within the baseband. They are architecture agnostic, suitable for bare-metal deployment, and should be enabled in existing C/C++ code bases to mitigate unknown vulnerabilities. Beyond security, addressing the issues uncovered by these sanitizers improves code health and overall stability, reducing resources spent addressing bugs in the future. An increasingly popular attack surface As we outlined previously, security research focused on the baseband has highlighted a consistent lack of exploit mitigations in firmware. Baseband Remote Code Execution (RCE) exploits have their own categorization in well-known third-party marketplaces with a relatively low payout. This suggests baseband bugs may potentially be abundant and/or not too complex to find and exploit, and their prominent inclusion in the marketplace demonstrates that they are useful. Baseband security and exploitation has been a recurring theme in security conferences for the last decade. Researchers have also made a dent in this area in well-known exploitation contests. Most recently, this area has become prominent enough that it is common to find practical baseband exploitation trainings in top security conferences. Acknowledging this trend, combined with the severity and apparent abundance of these vulnerabilities, last year we introduced updates to the severity guidelines of Android\'s Vulnerability Rewards Program (VRP). For example, we consider vulnerabilities allowing Remote Code Execution (RCE) in the cellular baseband to be of CRITICAL severity. Mitigating Vulnerability Root Causes with Sanitizers Common classes of vulnerabilities can be mitigated through the use of sanitizers provided by Clang-based toolchains. These sanitizers insert runtime checks against common classes of vulnerabilities. GCC-based toolchains may also provide some level of support for these flags as well, but will not be considered further in this post. We encourage you to check your toolchain\'s documentation. Two sanitizers included in Undefine | Tool Vulnerability Threat Mobile Prediction Conference | ★★★ | |
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2023-11-08 09:03:58 | Évolution de l'App Defence Alliance Evolving the App Defense Alliance (lien direct) |
Publié par Nataliya Stanetsky, Android Security and Privacy Team
L'App Defence Alliance (ADA), une collaboration à la tête de l'industrie Lancé Par Google en 2019, dédié à garantir la sécurité de l'écosystème de l'application, fait un pas en avant majeur.Nous sommes fiers de Annonce que l'App Defence Alliance se déplace sous l'égide de la Fondation Linux, avec Meta, Microsoft et Google en tant que membres de la direction fondatrice.
Cette migration stratégique représente un moment central dans le parcours de l'Alliance \\, ce qui signifie un engagement partagé par les membres pour renforcer la sécurité des applications et les normes connexes entre les écosystèmes.Cette évolution de l'App Defence Alliance nous permettra de favoriser une mise en œuvre plus collaborative des normes de l'industrie pour la sécurité des applications.
Uniter pour la sécurité des applications
Le paysage numérique évolue continuellement, tout comme les menaces pour la sécurité des utilisateurs.Avec la complexité toujours croissante des applications mobiles et l'importance croissante de la protection des données, c'est le moment idéal pour cette transition.La Fondation Linux est réputée pour son dévouement à favoriser des projets open source qui stimulent l'innovation, la sécurité et la durabilité.En combinant des forces avec des membres supplémentaires sous la Fondation Linux, nous pouvons nous adapter et répondre plus efficacement aux défis émergents.
L'engagement de la nouvelle application de défense de la Defence Alliance \\ est des membres de la direction & # 8211;Meta, Microsoft et Google & # 8211;est essentiel pour faire de cette transition une réalité.Avec une communauté membre couvrant 16 membres généraux et contributeurs supplémentaires, l'alliance soutiendra l'adoption à l'échelle de l'industrie des meilleures pratiques et directives de la sécurité des applications, ainsi que des contre-mesures contre les risques de sécurité émergents.
Poursuivant le programme d'atténuation des logiciels malveillants
L'App Defence Alliance a été formée avec la mission de réduire le risque de logiciels malveillants basés sur l'application et de mieux protéger les utilisateurs d'Android.La défense malveillante reste un objectif important pour Google et Android, et nous continuerons de nous associer étroitement avec les membres du programme d'atténuation des logiciels malveillants & # 8211;ESET, Lookout, McAfee, Trend Micro, Zimperium & # 8211;sur le partage direct du signal.La migration de l'ADA sous la Fondation Linux permettra un partage plus large de l'intelligence des menaces à travers les principaux partenaires et chercheurs écosystémiques.
en regardant vers l'avenir et en se connectant avec l'ADA
Nous vous invitons à rester connecté avec la nouvelle Alliance de défense de l'application sous l'égide de la Fondation Linux.Rejoignez la conversation pour aider à rendre les applications plus sécurisées.Avec le comité directeur, Alliance Partners et l'écosystème plus large, nous sommes impatients de créer des écosystèmes d'applications plus sûrs et dignes de confiance.
Posted by Nataliya Stanetsky, Android Security and Privacy Team The App Defense Alliance (ADA), an industry-leading collaboration launched by Google in 2019 dedicated to ensuring the safety of the app ecosystem, is taking a major step forward. We are proud to |
Malware Threat Mobile Prediction | ★★ | |
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2023-08-08 13:33:00 | Chute et zenbleed: Googlers aide à sécuriser l'écosystème Downfall and Zenbleed: Googlers helping secure the ecosystem (lien direct) |
Tavis Ormandy, Software Engineer and Daniel Moghimi, Senior Research ScientistFinding and mitigating security vulnerabilities is critical to keeping Internet users safe. However, the more complex a system becomes, the harder it is to secure-and that is also the case with computing hardware and processors, which have developed highly advanced capabilities over the years. This post will detail this trend by exploring Downfall and Zenbleed, two new security vulnerabilities (one of which was disclosed today) that prior to mitigation had the potential to affect billions of personal and cloud computers, signifying the importance of vulnerability research and cross-industry collaboration. Had these vulnerabilities not been discovered by Google researchers, and instead by adversaries, they would have enabled attackers to compromise Internet users. For both vulnerabilities, Google worked closely with our partners in the industry to develop fixes, deploy mitigations and gather details to share widely and better secure the ecosystem.What are Downfall and Zenbleed?Downfall (CVE-2022-40982) and Zenbleed (CVE-2023-20593) are two different vulnerabilities affecting CPUs - Intel Core (6th - 11th generation) and AMD Zen2, respectively. They allow an attacker to violate the software-hardware boundary established in modern processors. This could allow an attacker to access data in internal hardware registers that hold information belonging to other users of the system (both across different virtual machines and different processes). These vulnerabilities arise from complex optimizations in modern CPUs tha | Vulnerability Prediction Cloud | ★★ | |
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2023-07-27 12:01:55 | Les hauts et les bas de 0 jours: une année en revue des 0 jours exploités dans le monde en 2022 The Ups and Downs of 0-days: A Year in Review of 0-days Exploited In-the-Wild in 2022 (lien direct) |
Maddie Stone, Security Researcher, Threat Analysis Group (TAG)This is Google\'s fourth annual year-in-review of 0-days exploited in-the-wild [2021, 2020, 2019] and builds off of the mid-year 2022 review. The goal of this report is not to detail each individual exploit, but instead to analyze the exploits from the year as a whole, looking for trends, gaps, lessons learned, and successes. Executive Summary41 in-the-wild 0-days were detected and disclosed in 2022, the second-most ever recorded since we began tracking in mid-2014, but down from the 69 detected in 2021. Although a 40% drop might seem like a clear-cut win for improving security, the reality is more complicated. Some of our key takeaways from 2022 include:N-days function like 0-days on Android due to long patching times. Across the Android ecosystem there were multiple cases where patches were not available to users for a significant time. Attackers didn\'t need 0-day exploits and instead were able to use n-days that functioned as 0-days. | Tool Vulnerability Threat Prediction Conference | ★★★ | |
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2023-04-27 11:01:43 | Comment nous avons combattu de mauvaises applications et de mauvais acteurs en 2022 How we fought bad apps and bad actors in 2022 (lien direct) |
Posted by Anu Yamunan and Khawaja Shams (Android Security and Privacy Team), and Mohet Saxena (Compute Trust and Safety)
Keeping Google Play safe for users and developers remains a top priority for Google. Google Play Protect continues to scan billions of installed apps each day across billions of Android devices to keep users safe from threats like malware and unwanted software.
In 2022, we prevented 1.43 million policy-violating apps from being published on Google Play in part due to new and improved security features and policy enhancements - in combination with our continuous investments in machine learning systems and app review processes. We also continued to combat malicious developers and fraud rings, banning 173K bad accounts, and preventing over $2 billion in fraudulent and abusive transactions. We\'ve raised the bar for new developers to join the Play ecosystem with phone, email, and other identity verification methods, which contributed to a reduction in accounts used to publish violative apps. We continued to partner with SDK providers to limit sensitive data access and sharing, enhancing the privacy posture for over one million apps on Google Play.
With strengthened Android platform protections and policies, and developer outreach and education, we prevented about 500K submitted apps from unnecessarily accessing sensitive permissions over the past 3 years.
Developer Support and Collaboration to Help Keep Apps Safe
As the Android ecosystem expands, it\'s critical for us to work closely with the developer community to ensure they have the tools, knowledge, and support to build secure and trustworthy apps that respect user data security and privacy.
In 2022, the App Security Improvements program helped developers fix ~500K security weaknesses affecting ~300K apps with a combined install base of approximately 250B installs. We also launched the Google Play SDK Index to help developers evaluate an SDK\'s reliability and safety and make informed decisions about whether an SDK is right for their business and their users. We will keep working closely with SDK providers to improve app and SDK safety, limit how user data is shared, and improve lines of communication with app developers.
We also recently launched new features and resources to give developers a better policy experience. We\'ve expanded our Helpline pilot to give more developers direct policy phone support. And we piloted the Google Play Developer Community so more developers can discuss policy questions and exchange best practices on how to build |
Malware Prediction | Uber | ★★★★ |
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2022-12-15 20:51:24 | Expanding the App Defense Alliance (lien direct) | Posted by Brooke Davis, Android Security and Privacy Team The App Defense Alliance launched in 2019 with a mission to protect Android users from bad apps through shared intelligence and coordinated detection between alliance partners. Earlier this year, the App Defense Alliance expanded to include new initiatives outside of malware detection and is now the home for several industry-led collaborations including Malware Mitigation, MASA (Mobile App Security Assessment) & CASA (Cloud App Security Assessment). With a new dedicated landing page at appdefensealliance.dev, the ADA has an expanded mission to protect Android users by removing threats while improving app quality across the ecosystem. Let's walk through some of the latest program updates from the past year, including the addition of new ADA members. Malware MitigationTogether, with the founding ADA members - Google, ESET, Lookout, and Zimperium, the alliance has been able to reduce the risk of app-based malware and better protect Android users. These partners have access to mobile apps as they are being submitted to the Google Play Store and scan thousands of apps daily, acting as another, vital set of eyes prior to an app going live on Play. Knowledge sharing and industry collaboration are important aspects in securing the world from attacks and that's why we're continuing to invest in the program. New ADA MembersWe're excited to see the ADA expand with the additions of McAfee and Trend Micro. Both McAfee and Trend Micro are leaders in the antivirus space and we look forward to their contributions to the program. Mobile App Security Assessment (MASA)With consumers spending four to five hours per day in mobile apps, ensuring the safety of these services is more important than ever. According to Data.ai, the pandemic accelerated existing mobile habits - with app categories like finance growing 25% YoY and users spending over 100 billion hours in shopping apps. That's why the ADA introduced MASA (Mobile App Security Assessment), which allows developers to have their apps independently validated against the Mobile Application Security Verification Standard (MASVS standard) under the OWASP Mobile Application Security project. The project's mission is to “Define the industry standard for mobile application security,” and has been used by both public and private sector organizations as a form of industry best practices when it comes to mobile application security. Developers can work directly with an ADA Authorized Lab to have their apps evaluated against a set of MASVS L1 requirements. Once successful, the app's validation is listed in the recently launched App Validation Directory, which provides users a single place to view all app validations. The Directory also allows users to access more assessment details including validation date, test lab, and a report showing all test steps and requirements. The Directory will be updated over time with new features and search functionality to make it more user friendly. The Google Play Store is the first commercial app store to recognize and display a badge for any app that has completed an independent security review through ADA MASA. The badge is displayed within an app's respective | Malware Guideline Prediction | Uber | ★★ |
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