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Alerts This Week
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Mageia 8: 2023-0130 Moderate: OpenSSL Denial Of Service Issue

mageia
Calendar Grey April 11, 2023
Dist Mageia Esm H88
Urgent update for openssl on Mageia tackling severe security flaws that involve denial of service and certificate management concerns.
A read buffer overrun can be triggered in X.509 certificate verification, specifically in name constraint checking

Summary

A read buffer overrun can be triggered in X.509 certificate verification, specifically in name constraint checking. Note that this occurs after certificate chain signature verification and requires either a CA to have signed the malicious certificate or for the application to continue certificate verification despite failure to construct a path to a trusted issuer. The read buffer overrun might result in a crash which could lead to a denial of service attack. In theory it could also result in the disclosure of private memory contents (such as private keys, or sensitive plaintext) although we are not aware of any working exploit leading to memory contents disclosure as of the time of release of this advisory. In a TLS client, this can be triggered by connecting to a malicious server. In a TLS server, this can be triggered if the server requests client authentication and a malicious client connects. (CVE-2022-4203)
A timing based side channel exists in the OpenSSL RSA Decryption imple...

Read the Full Advisory

References

- https://bugs.mageia.org/show_bug.cgi?id=31526

- https://openssl-library.org/news/secadv/20230207.txt

- https://lists.debian.org/debian-security-announce/2023/msg00032.html

- https://ubuntu.com/security/notices/USN-5844-1

- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/RGMDA2QI6RIJSJF3FDWES76ORE53ELXX/

- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/MGJS3DWIQT3W4V6WXNE2IHFLOKIFL22G/

- https://access.redhat.com/errata/RHSA-2023:1405

- https://openssl-library.org/news/secadv/20230322.txt

- https://openssl-library.org/news/secadv/20230328.txt

- https://www.cve.org/CVERecord?id=CVE-2022-4203

- https://www.cve.org/CVERecord?id=CVE-2022-4304

- https://www.cve.org/CVERecord?id=CVE-2022-4450

- https://www.cve.org/CVERecord?id=CVE-2023-0215

- https://www.cve.org/CVERecord?id=CVE-2023-0216

- https://www.cve.org/CVERecord?id=CVE-2023-0217

- https://www.cve.org/CVERecord?id=CVE-2023-0286

- https://www.cve.org/CVERecord?id=CVE-2023-0401

- https://www.cve.org/CVERecord?id=CVE-2023-0464

- https://www.cve.org/CVERecord?id=CVE-2023-0465

- https://www.cve.org/CVERecord?id=CVE-2023-0466

Topics%20covered

Topics Covered

security advisory denial of service software update OpenSSL X.509 certificate issue Mageia

Resolution

SRPMS

- 8/core/openssl-1.1.1t-1.mga8

Publication date: 11 Apr 2023
URL: https://advisories.mageia.org/MGASA-2023-0130.html
Type: security
CVE: CVE-2022-4203, CVE-2022-4304, CVE-2022-4450, CVE-2023-0215, CVE-2023-0216, CVE-2023-0217, CVE-2023-0286, CVE-2023-0401, CVE-2023-0464, CVE-2023-0465, CVE-2023-0466

Topics%20covered

Topics Covered

security advisory denial of service software update OpenSSL X.509 certificate issue Mageia

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