OpenSSL X.509 Email Address Buffer Overflow
Summary
ALSA-2022:7288: Important: openssl security update. Affects openssl versions < 1:3.0.1-43.el9_0. Fixed in 1:3.0.1-43.el9_0. How to fix ↓
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Background
OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols, as well as a full strength general-purpose cryptography library. It is widely used in various applications to provide secure communication over the internet. However, a vulnerability has been discovered in OpenSSL that could allow an attacker to trigger a buffer overflow when processing X.509 email addresses.
Vulnerability Detail
The vulnerability, identified as CVE-2022-3602 and CVE-2022-3786, arises due to improper handling of email addresses in X.509 certificates. An attacker can exploit this flaw by crafting a malicious certificate with a specially crafted email address, leading to a buffer overflow. This could potentially result in remote code execution or denial of service attacks. The impact of this vulnerability is considered important.
How To Fix
Minimum fixed version
1:3.0.1-43.el9_0
This is the first release that contains the fix.
sudo dnf update opensslTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no known workaround for this vulnerability. It is crucial to apply the security update as soon as possible to mitigate the risk of exploitation.
Conclusion
OpenSSL is a widely used cryptographic library and SSL/TLS implementation. However, it is susceptible to a buffer overflow vulnerability when processing X.509 email addresses. To mitigate the risk, it is crucial to update the OpenSSL package to the latest version. For further assistance and support in vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for openssl →
FAQ
OpenSSL is a widely used toolkit that implements SSL and TLS protocols, providing secure communication over the internet.
The vulnerability could allow an attacker to trigger a buffer overflow, potentially leading to remote code execution or denial of service attacks.
To fix this vulnerability, update the OpenSSL package to version 1:3.0.1-43.el9_0 or later using the package manager of the affected system.
There is no known workaround for this vulnerability. Applying the security update is the recommended solution.
You can find more details about this vulnerability, including the impact and CVSS score, on the CVE pages: CVE-2022-3602 and CVE-2022-3786.
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