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13 posts in the catalog

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oversecured.comarticle

Android security checklist: theft of arbitrary files | Oversecured Blog

Oversecured's Android security checklist on arbitrary file theft from an app's private storage. It covers implicit intents (PICK, GET_CONTENT) returning file:// or content:// URIs, SEND/SEND_MULTIPLE share activities, exported and non-exported FileProviders, path traversal via Uri.getLastPathSegment, WebView, and local NanoHTTPD servers. Each case has vulnerable code, an attacker PoC and fixes such as /proc/self/fd path checks and narrow files-path entries.

AndroidNanoHTTPDFileProvider+2
Oversecuredpath traversalFileUriExposedException+3

Mobile Security, AppSec

oversecured.comwriteup

Discovering vendor-specific vulnerabilities in Android | Oversecured Blog

Oversecured describes extending its Android scanner to system APIs and to Samsung's Android build, after comparing Google and Samsung framework JARs and about 400 system services. It explains AIDL service permission checks and new control-flow analyses. Examples include Samsung's unchecked semIsBackupEnabled(), a broadcast that reboots the device, and a LaunchAnyWhere in Settings. Samsung had fixed over 60 reported issues.

AndroidSamsungOversecured
LaunchAnyWhereAIDLsystem_server+1

Mobile Security, AppSec

oversecured.comarticle

Content Providers and the potential weak spots they can have | Oversecured Blog

Oversecured's Android security checklist for Content Providers covers insecure FileProvider path configs, path traversal via decoded Uri.getLastPathSegment(), mismatched readPermission/writePermission, proxying requests to more privileged providers, SQL injection across a shared database, and sensitive actions in providers. Each case has vulnerable manifest and Java code, an attacker PoC and remediation. Real cases from Google and Samsung devices are cited. The page text was truncated near the end.

AndroidSQLiteJava
Oversecuredpath traversalSQL injection+5

Mobile Security, AppSec

oversecured.comwriteup

Introducing MavenGate: a supply chain attack method for Java and Android applications | Oversecured Blog

MavenGate is Oversecured's research on hijacking Maven dependencies by buying expired domains behind groupIds on Maven Central and JitPack. It found 6,170 of 33,938 checked domains (18.18%) vulnerable, and tested the attack with its own com.oversecured:hello-world library. It lists defenses (Gradle verification-metadata.xml, PGP signatures) and proposes changes to repository signing.

MavenGradleMaven Central+3
MavenGateOversecuredSonatype+2

Supply Chain, Mobile Security, AppSec

oversecured.comarticle

Oversecured Apps Care. Part 1: Vulnerability disclosure of 225 Google apps | Oversecured Blog

Oversecured Apps Care, Part 1 (21 March 2024) publishes scanner results for about 224 Google Android apps, drawn from a wider scan of over 6,000 public APKs from 1,000+ companies. Tables per device image (phone, Wear OS, Android Automotive, Android TV) give package names, three finding counts and report links, including android, com.android.settings, gms and Play Store. It invites researchers to report issues to Google for rewards.

AndroidWear OSAndroid Automotive+1
OversecuredOversecured Apps Care

Mobile Security, AppSec

oversecured.comwriteup

20 Security Issues Found in Xiaomi Devices | Oversecured Blog

Oversecured's write-up of 20 vulnerabilities in Xiaomi apps and system components, reported to Xiaomi between 25 and 30 April 2023. Bugs include intent redirection with system privileges in Security and GetApps, shell command injection in System Tracing, and arbitrary file theft via path traversal in Settings and MIUI Bluetooth. Each has a PoC. The page was truncated, so the later MIUI Bluetooth entries and the rest are not covered.

AndroidGson
OversecuredXiaomiMIUI+9

Mobile Security, AppSec

oversecured.comwriteup

Disclosure of 7 Android and Google Pixel Vulnerabilities | Oversecured Blog

Oversecured discloses seven Android vulnerabilities, two of them Pixel-specific, all reported to Google and fixed except one low-severity WebView case. They are the Camera geolocation leak (CVE-2024-0017), a VPN bypass list change (CVE-2023-21383), a Bluetooth permission check flaw (CVE-2024-34719), the WorkSource parcel mismatch (CVE-2023-20963, exploited in the wild by the Pinduoduo app), Device Admin HTML injection (CVE-2021-0600) and a ContentProvider.openFile() caller-context bypass (CVE-2023-21292). Each has root cause and PoC code.

AndroidGoogle PixelWebView+2
CVE-2024-0017CVE-2023-21383CVE-2024-34719+9

Mobile Security, Offensive Security

oversecured.comarticle

Inside mobile taint analysis: how source-to-sink tracking finds real data-leak paths | Oversecured Blog

Oversecured explains taint analysis for Android and iOS apps and contrasts it with pattern-matching SAST such as MobSF. It covers source, flow and sink, cross-component tracking over Intents, flag-based sanitizer modeling and implicit intent simulation. The case study is an unsafe Class.forName().newInstance() on a Serializable transportFactoryClassName field in Google's com.google.auth.oauth2 credential classes, which Google fixed with a $3,133.70 bounty.

AndroidiOSOversecured+3
intent redirectionpath traversalSSRF+4

Mobile Security, AppSec

oversecured.comarticle

Android deep link vulnerabilities: how intent filters lead to account takeover | Oversecured Blog

Oversecured's article on Android deep-link vulnerabilities covers five patterns: custom scheme hijacking, open redirect into WebView, limited and full intent redirection, and domain takeover via an expired whitelist entry. It shows bypass payloads, intent selector abuse, and the HierarchicalUri reflection bypass. It also compares what SAST and DAST can find and gives a checklist for pentesters.

AndroidOAuthChrome+1
deep link hijackingcustom scheme hijackingopen redirect+8

Mobile Security, AppSec

oversecured.comarticle

Vulnerabilities that lead to account takeover in banking and fintech mobile apps | Oversecured Blog

Oversecured guide to eight vulnerability categories that lead to account takeover in mobile banking and fintech apps: WebView JavaScript bridge token leakage, Intent Redirection, hardcoded tokens, deeplink hijacking, insecure token storage, localhost OAuth listeners, AIDL abuse and weak biometric auth. It includes a WebView PoC based on Samsung SmartThings CVE-2022-30746 and maps findings to OWASP MASVS, PCI DSS and PSD2. It argues taint analysis plus dynamic PoC is needed to find multi-component chains.

AndroidiOSOAuth+1
CVE-2022-30746Intent Redirectiondeeplink hijacking+9

Mobile Security, AppSec, Identity & Access

oversecured.comarticle

SDK security in mobile apps: the attack surface your team didn

Oversecured guide to SDK security in mobile apps, built around Microsoft's April 2026 disclosure of an intent redirection flaw in EngageLab's EngageSDK (50 million installs, fixed in 5.2.1). It covers SDK attack surfaces (exported components, WebViews, deep links, hardcoded secrets, payment crypto), a canhub image cropper file-overwrite example, why source-only SAST misses SDK code, and MASVS and PCI DSS expectations.

AndroidEngageSDKOversecured+3
intent redirectionEngageSDK intent redirectionMTCommonActivity+11

Mobile Security, Supply Chain, AppSec

oversecured.comarticle

What Changed When Mobile Security Stopped Being Theoretical | Oversecured Blog

An Oversecured Head of Engineering, coming from 20 years of web work, describes four mobile security risks that became concrete after seeing real production apps. These are old vulnerable binaries that stay installed after a fix, secrets embedded in client code, Keychain/Keystore guarantees that are weaker than assumed with tokens leaking via logs, and deep links or exported components acting as public endpoints. It ends with advice: test the shipped artifact, verify the full data lifecycle, and build server-side containment.

AndroidiOSOversecured
deep linkscustom URL schemesApp Links+5

Mobile Security, AppSec

oversecured.comarticle

PCI DSS and Mobile Apps: A Simple Guide | Oversecured Blog

Guide to PCI DSS v4.0.1 scope for mobile apps, with a mapping of common Android and iOS finding types to the requirements they break (Req 2, 3, 4, 6, 7). It covers which app behaviors bring an app into scope and gives three anonymized cases: cleartext HTTP in a vendor native library, hardcoded keys in a third-party SDK, and an implicit Intent leaking data. It argues for testing the shipped binary and keeping a current component inventory.

AndroidiOS
PCI DSSPCI Security Standards CouncilQualified Security Assessor+5

Mobile Security, GRC