CVE-2017-15325 in Smart Phone
Summary
by MITRE
The Bdat driver of Prague smart phones with software versions earlier than Prague-AL00AC00B211, versions earlier than Prague-AL00BC00B211, versions earlier than Prague-AL00CC00B211, versions earlier than Prague-TL00AC01B211, versions earlier than Prague-TL10AC01B211 has integer overflow vulnerability due to the lack of parameter validation. An attacker tricks a user into installing a malicious APP and execute it as a specific privilege; the APP can then send a specific parameter to the driver of the smart phone, causing arbitrary code execution.
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Analysis
by VulDB Data Team • 02/22/2023
The vulnerability identified as CVE-2017-15325 represents a critical integer overflow flaw within the Bdat driver component of Prague smartphone devices. This issue affects multiple software versions including Prague-AL00AC00B211, Prague-AL00BC00B211, Prague-AL00CC00B211, Prague-TL00AC01B211, and Prague-TL10AC01B211, indicating a widespread exposure across various device models and firmware releases. The vulnerability stems from insufficient parameter validation within the driver's implementation, creating a pathway for malicious exploitation that can compromise the entire device.
The technical exploitation of this vulnerability follows a specific attack pattern that leverages social engineering techniques to deceive users into installing malicious applications. The integer overflow occurs when the Bdat driver processes user-supplied parameters without proper bounds checking, allowing an attacker to craft specific input values that exceed the maximum representable value for the integer data type. This overflow condition creates unpredictable behavior within the driver's memory management and execution flow, ultimately enabling arbitrary code execution capabilities.
From an operational security perspective, this vulnerability presents a severe risk to mobile device users as it requires only a simple social engineering attack to achieve privilege escalation and code execution. The attack vector involves tricking users into installing a malicious application that can then communicate with the vulnerable Bdat driver through specific parameter inputs. Once exploited, the vulnerability allows attackers to execute arbitrary code with elevated privileges, potentially leading to complete device compromise, data theft, or further lateral movement within network environments.
The attack scenario aligns with ATT&CK framework techniques related to privilege escalation and code injection, specifically targeting the driver-level execution environment. This vulnerability represents a classic example of CWE-190 Integer Overflow or Wraparound, where insufficient input validation leads to mathematical operations that exceed the maximum value representable by the data type. The impact extends beyond individual device compromise to potentially affect enterprise security postures, as compromised devices can serve as entry points for broader network infiltration.
Mitigation strategies should prioritize immediate firmware updates from manufacturers to address the integer overflow in the Bdat driver component. Users must avoid installing applications from untrusted sources and maintain current security patches. Organizations should implement mobile device management policies that restrict application installation and monitor for suspicious behavior patterns. Network segmentation and endpoint detection systems should be configured to identify potential exploitation attempts through unusual driver communication patterns. Security teams should also consider implementing application whitelisting policies to prevent unauthorized applications from executing code that could interact with vulnerable system drivers.