SB2017070716 - Path traversal in Google, Google Android

Description

This security bulletin contains information about 1 vulnerability.

1) Path traversal (CVE-ID: CVE-2014-7954)

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSSv4: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in the doSendObjectInfo method in frameworks/av/media/mtp/MtpServer.cpp in Android 4.4.4. A remote authenticated attacker can send a specially crafted HTTP request and physically proximate attackers with a direct connection to the target Android device to upload files outside of the sdcard via a . (dot dot) in a name parameter of an MTP request.

Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References

• http://packetstormsecurity.com/files/131509/Android-4.4-MTP-Path-Traversal.html
• http://seclists.org/fulldisclosure/2015/Apr/50
• http://www.securityfocus.com/archive/1/535294/100/1100/threaded
• http://www.securityfocus.com/bid/74210