CVE Vulnerabilities

CVE-2014-3190

Use After Free

Published: Oct 08, 2014 | Modified: Nov 07, 2023
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P
RedHat/V2
6.8 CRITICAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
RedHat/V3
Ubuntu
MEDIUM

Use-after-free vulnerability in the Event::currentTarget function in core/events/Event.cpp in Blink, as used in Google Chrome before 38.0.2125.101, allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via crafted JavaScript code that accesses the path property of an Event object.

Weakness

Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.

Affected Software

Name Vendor Start Version End Version
Chrome Google * 38.0.2125.7 (including)
Supplementary for Red Hat Enterprise Linux 6 RedHat chromium-browser-0:38.0.2125.101-2.el6_6 *
Chromium-browser Ubuntu devel *
Chromium-browser Ubuntu lucid *
Chromium-browser Ubuntu precise *
Chromium-browser Ubuntu trusty *
Chromium-browser Ubuntu upstream *
Chromium-browser Ubuntu utopic *
Chromium-browser Ubuntu vivid *
Chromium-browser Ubuntu wily *
Oxide-qt Ubuntu devel *
Oxide-qt Ubuntu trusty *
Oxide-qt Ubuntu upstream *
Oxide-qt Ubuntu utopic *
Oxide-qt Ubuntu vivid *
Oxide-qt Ubuntu wily *

Extended Description

The use of previously-freed memory can have any number of adverse consequences, ranging from the corruption of valid data to the execution of arbitrary code, depending on the instantiation and timing of the flaw. The simplest way data corruption may occur involves the system’s reuse of the freed memory. Use-after-free errors have two common and sometimes overlapping causes:

In this scenario, the memory in question is allocated to another pointer validly at some point after it has been freed. The original pointer to the freed memory is used again and points to somewhere within the new allocation. As the data is changed, it corrupts the validly used memory; this induces undefined behavior in the process. If the newly allocated data happens to hold a class, in C++ for example, various function pointers may be scattered within the heap data. If one of these function pointers is overwritten with an address to valid shellcode, execution of arbitrary code can be achieved.

Potential Mitigations

References