Articles with tag: Advisories
POSTED BY: Angelos T. Kalaitzidis / 24.05.2022

Multiple vulnerabilities in radare2

CVE IDs:CVE-2022-0419, CVE-2021-44974, CVE-2021-44975
Affected Products:radare2 versions prior to 5.6.0
Class:NULL pointer dereference (CWE-476), Heap-based buffer overflow (CWE-122)
Discovered by:Angelos T. Kalaitzidis

CENSUS identified a number of NULL pointer dereference and Heap buffer overflow bugs in the radare2 project code. Radare2 is a popular reverse engineering framework. CENSUS has verified that release 5.6.0 of radare2 carries the appropriate fixes to remediate all of the identified issues.

POSTED BY: Chariton Karamitas / 14.04.2021

WhatsApp exposure of TLS 1.2 cryptographic material to third party apps

CVE ID:CVE-2021-24027
Affected Products:WhatsApp Messenger for Android, versions prior to
Class:Exposure of Sensitive Information to an Unauthorized Control Sphere (CWE-497)
Discovered by:Chariton Karamitas

CENSUS identified that versions prior to of WhatsApp for Android allowed third party apps to access WhatsApp TLS 1.2 cryptographic material, as this was stored in "app-specific external storage". On Android 9 and previous versions of Android, the material is exposed to any third party app that bears the READ_EXTERNAL_STORAGE or WRITE_EXTERNAL_STORAGE permission. On Android 10 a malicious app would also require the requestLegacyExternalStorage attribute to access the files. Through the installation of a malicious app, or alternatively, through the exploitation of a vulnerable app (or Android component) that resides on a WhatsApp user's mobile device, remote actors were able to control the victim user's TLS session cryptographic secrets and could thus perform Man-in-The-Middle attacks to WhatsApp communications. Research has shown that exploitation of this vulnerability can lead to remote code execution on the victim device. CENSUS strongly recommends updating WhatsApp to version or greater. This is a serious vulnerability which could be abused for surveillance purposes.

POSTED BY: George Poulios / 21.10.2020

Microchip ASF4 integer overflows in flash_read, flash_write and flash_append

CVE ID:CVE-2019-16127
Affected Products:ASF4 as distributed through (last accessed 2020-10-21)
Class:Integer Overflow or Wraparound (CWE-190)
Discovered by:George Poulios

CENSUS identified several integer overflow problems in the flash_read, flash_write and flash_append functions of the Microchip ASF4 framework. This framework is used during firmware development for Atmel (now Microchip) microcontrollers. An adversary may abuse these issues to gain unauthorized read or write access to arbitrary pages of the flash storage, especially pages mapped at low memory addresses. As no patch is available from the vendor, CENSUS urges developers to implement a check for integer overflows in the relevant code.

POSTED BY: George Poulios / 21.10.2020

Microchip cryptoauthlib atcab_genkey_base buffer overflow

CVE ID:CVE-2019-16129
Affected Products:cryptoauthlib versions prior to "20191122"
Class:Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')(CWE-120)
Discovered by:George Poulios

CENSUS identified a buffer overflow vulnerability in the atcab_genkey_base function of the cryptoauthlib library. This library is part of the standard SDK provided by Microchip and is used to drive the operation of cryptographic co-processors sold by the vendor, such as the ATECC608A. An attacker with physical access to an embedded device where a microcontroller unit executes a vulnerable version of this library, may be able to execute arbitrary code on the microcontroller, by supplying malicious input to the microcontroller. Affected manufacturers of embedded systems that use Microchip cryptographic co-processors, are strongly recommended to update to at least version "20191122" of the "cryptoauthlib" library.