CVE-2023-51767Improper Authentication in Fedora

Severity
7.0HIGHNVD
EPSS
0.0%
top 99.56%
CISA KEV
Not in KEV
Exploit
No known exploits
Timeline
PublishedDec 24

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 architectu

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.0 | Impact: 5.9

Affected Packages1 packages

Alpineopenbsd/openssh< 9.7_p1-r0+4

Also affects: Fedora 39, Enterprise Linux 8.0, 9.0

🔴Vulnerability Details

4
OSV
CVE-2023-51767: OpenSSH through 92023-12-24
OSV
CVE-2023-51767: OpenSSH through 102023-12-24
CVEList
CVE-2023-51767: OpenSSH through 102023-12-24
GHSA
GHSA-27q9-h529-q4g3: OpenSSH through 92023-12-24

📋Vendor Advisories

1
Red Hat
openssh: authentication bypass via row hammer attack2023-12-24
CVE-2023-51767 — Improper Authentication in Fedora | cvebase