PT-2018-1605 · Google · Android

Mihai Popa · Published 2018-05-09 · Updated 2018-12-28 · CVE-2018-9452

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Android versions Android-7.0 through Android-9.0

Description The issue is related to a possible application hang due to a slow width calculation in the getOffsetForHorizontal function of Layout.java. This could lead to a remote denial of service if a contact with many hidden unicode characters were sent to the device and used by a local app, with no additional execution privileges needed. User interaction is necessary for exploitation. The vulnerability is also associated with incorrect resource cleanup or release, which may allow a remote attacker to cause a denial of service.

Recommendations For Android versions Android-7.0 through Android-9.0, consider restricting the use of the getOffsetForHorizontal function in Layout.java to minimize the risk of exploitation until a patch is available. As a temporary workaround, avoid using contacts with many hidden unicode characters in local apps to reduce the likelihood of triggering the issue.

Fix

RCE

Improper Resource Release

Weakness Enumeration

CWE-20

CWE-404

Related Identifiers

BDU:2018-01164

CVE-2018-9452

Affected Products

Android

References · 8

• https://osv.dev/vulnerability/CVE-2018-9452 · Vendor Advisory
• https://bdu.fstec.ru/vul/2018-01164 · Security Note
• https://android.googlesource.com/platform/frameworks/base/+/3b6f84b77c30ec0bab5147b0cffc192c86ba2634 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2018-9452 · Security Note
• https://android.googlesource.com/platform/frameworks/base/+/54f661b16b308cf38d1b9703214591c0f83df64d%2C · Note
• http://securityfocus.com/bid/105484 · Note
• https://source.android.com/security/bulletin/2018-10-01%2C · Note
• https://source.android.com/security/bulletin/2018-10-01 · Note