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Security Parrot - Cyber Security News, Insights and Reviews > News > A number of serious vulnerabilities have been fixed in OpenSSL
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A number of serious vulnerabilities have been fixed in OpenSSL

Last updated: 2023/02/09 at 1:52 AM
Security Parrot Editorial Team Published February 9, 2023
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OpenSSL developers have released a major security update that closes at least eight documented bugs that exposed OpenSSL users to the risk of hacker attacks.

The most serious of all the fixed vulnerabilities was CVE-2023-0286, which belongs to the type confusion type. This issue allowed an attacker to read the contents of memory or use denial of service exploits.

OpenSSL gave this vulnerability a high severity rating, but stressed that the bug is likely to affect only applications that implement their own functions for obtaining CRLs over the network.

Other issues include the side-channel vulnerability CVE-2022-4304 associated with the OpenSSL RSA Decryption implementation. Exploitation of this bug may be enough to recover data transmitted over the network in clear text, in the style of a Bleichenbacher attack.

In addition, a heap buffer overflow during X.509 certificate validation (CVE-2022-4203) could result in a failure that could result in a denial of service.

Organizations using OpenSSL versions 3.0, 1.1.1, and 1.0.2 are strongly encouraged to install patches as soon as possible.

It is also worth noting that this week a critical vulnerability in OpenSSH was fixed, which received the identifier CVE-2023-25136 and scored 9.1 points out of 10 on the CVSS vulnerability rating scale.

This problem appeared in OpenSSH 9.1 and worked without authentication, resulting in a double free in an unprivileged sshd process. Such errors can lead to data corruption in memory, which in turn leads to a crash or arbitrary code execution.

Users are advised to upgrade to OpenSSH 9.2 as soon as possible to mitigate potential risks.

Weekly Updates For Our Loyal Readers!

Security Parrot Editorial Team February 9, 2023
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