PT-2021-7543 · Amazon · Amazon Kindle

Published 2021-09-01 · Updated 2021-09-10 · CVE-2021-30354

Positive Technologies (AI Summary)

CVSS v2.0

9.3

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Amazon Kindle e-reader versions prior to and including 5.13.4

Description The issue is caused by an Integer Overflow in the CJBig2Image::expand() function, leading to a Heap-Based Buffer Overflow. This results in memory corruption and allows for code execution when a crafted PDF book is parsed. The vulnerability can be exploited by an attacker to execute arbitrary code using a specially crafted PDF file.

Recommendations For Amazon Kindle e-reader versions prior to and including 5.13.4, update to a version later than 5.13.4 to resolve the issue. As a temporary workaround, consider avoiding the use of crafted PDF books until a patch is available.

Exploit

Fix

Integer Overflow

Weakness Enumeration

CWE-680

CWE-190

Related Identifiers

BDU:2022-07435

CVE-2021-30354

Affected Products

Amazon Kindle

References · 6

• 🔥 https://research.checkpoint.com/2021/i-can-take-over-your-kindle · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-30354 · Security Note
• https://bdu.fstec.ru/vul/2022-07435 · Security Note
• https://osv.dev/vulnerability/CVE-2021-30354 · Vendor Advisory
• https://cpr-zero.checkpoint.com/vulns/cprid-2181 · Note
• https://t.me/cvenotify/20526 · Telegram Post