CVE-2023-51767 Auth bypass in n/a

What is CVE-2023-51767?

CVE-2023-51767 is a high-severity authentication bypass vulnerability in Fedoraproject Fedora, published on 24 Dec 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

OpenSSH through 10.0, when common types of DRAM are used, might allow row hammer attacks (for authentication bypass) because the integer value of authenticated in mm_answer_authpassword does not resist flips of a single bit. NOTE: this is applicable to a certain threat model of attacker-victim co-location in which the attacker has user privileges. NOTE: this is disputed by the Supplier, who states "we do not consider it to be the application's responsibility to defend against platform architectural weaknesses."

Which versions are affected by CVE-2023-51767?

It affects 3 products.

Products include Fedoraproject Fedora, OpenSSH, Redhat Enterprise Linux.

How do I fix CVE-2023-51767?

No fix published yet.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2023-51767 being exploited?

There is no known exploitation of CVE-2023-51767 in the wild and no public exploit code.

Other vulnerabilities in Fedoraproject Fedora

• CVE-2024-4577 PHP-CGI OS Command Injection Exploited Critical 9.8
• CVE-2021-39226 Grafana Authentication Bypass Exploited Critical 9.8
• CVE-2019-5544 VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Exploited Critical 9.8
• CVE-2024-4947 Google Chromium V8 Type Confusion Exploited Critical 9.6
• CVE-2024-4671 Google Chromium Visuals Use-After-Free Exploited Critical 9.6

All Fedoraproject Fedora vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALPINE-CVE-2023-51767, GHSA-27q9-h529-q4g3, ROOT-OS-DEBIAN-11-CVE-2023-51767, ROOT-OS-DEBIAN-12-CVE-2023-51767.