Articles with tag: Advisories
POSTED BY: Aris Thallas / 08.10.2020

Samsung Hypervisor (RKP) arbitrary zero write

CVE ID:CVE-2019-19273
Samsung ID:SVE-2019-16265 (Look for SVE-2019-16265)
Affected Products:Samsung mobile devices running Android O(8.0) and P(9.0) with Exynos 8895 chipset (tested on S8 and Note8 firmware)
Class:"Write What Where" Condition where "What" is always zero (CWE-123)
Discovered by:Aristeidis Thallas

CENSUS identified a bug in RKP, the Samsung EL2 Hypervisor implementation. The bug allows to write the zero 64-bit value to an arbitrary memory address. For the bug to be triggered, code execution is required in the context of the EL1 kernel. The bug was verified on the Samsung S8 and Note8 devices and was fixed by Samsung in the "SMR February-2020 Release 1". The bug may allow an adversary with kernel execution access to circumvent established security controls through the corruption of device memory. Users are urged to follow the latest security updates offered by Samsung for their mobile devices.

POSTED BY: Dimitrios Glynos / 31.01.2020

Multiple NULL pointer dereference vulnerabilities in newlib

CVE IDs: CVE-2019-14871, CVE-2019-14872, CVE-2019-14873, CVE-2019-14874, CVE-2019-14875, CVE-2019-14876, CVE-2019-14877, CVE-2019-14878
Affected Products:newlib versions prior to 3.3.0, its derivatives (e.g. newlib-nano, picolibc and related Platform SDKs such as " GNU ARM Embedded Toolchain 64-bit Linux 8-2018-q4-major")
Class:NULL pointer dereference (CWE-476)
Discovered by:Dimitrios Glynos

During the security assessment of a firmware binary a number of NULL pointer dereference bugs were found caused by newlib-nano code. newlib-nano is a C library for use on 32-bit processors that have only a few kB of memory. It turns out that newlib-nano was part of the "GNU ARM Embedded Toolchain" that the chip manufacturer (Microchip/Atmel) delivered for application development purposes. newlib-nano inherits code from the newlib project, which is a C library intended for use on embedded systems. All NULL pointer dereference bugs identified in newlib-nano were inherited by newlib code and therefore CENSUS reported the respective vulnerabilities to the upstream project. Users of the newlib library are advised to update to version 3.3.0 and make sure to build the library sources with the newlib-reent-check-verify 'configure' option enabled.

POSTED BY: John Torakis / 02.10.2017

e2openplugin OpenWebif saveConfig remote code execution

CVE ID:CVE-2017-9807
Affected Products:e2openplugin OpenWebif (versions 0.2.9-1.2.4)
Class:Improper control of generation of code ('Code Injection') (CWE-94)
Discovered by:John Torakis

OpenWebif is a Web application that is used in IP TVs and media boxes to provide an easy-to-use Web Interface. It is written mostly in Python (Backend) and JavaScript (Frontend). It can be found in DreamBox devices.

POSTED BY: Anestis Bechtsoudis / 25.07.2016

Android stagefright impeg2d_vld_decode stack buffer overflows

CVE ID:CVE-2016-0836
Android ID:25812590
Affected Products:Android OS 6.0 — 6.0.1
Class:Out-of-bounds Write (CWE-787)
Discovered by:Anestis Bechtsoudis

Android provides a media playback engine at the native level called Stagefright that comes built-in with software-based codecs for several popular media formats. Stagefright features for audio and video playback include integration with OpenMAX codecs, session management, time-synchronized rendering, transport control, and DRM.