High severity · published Jul 2, 2024
CVE-2024-39894
OpenSSH 9.5 through 9.7 before 9.8 sometimes allows timing attacks against echo-off password entry (e.g., for su and Sudo) because of an ObscureKeystrokeTiming logic error
7.5
CVSS
1.6%
EPSS
No
On KEV
Description
OpenSSH 9.5 through 9.7 before 9.8 sometimes allows timing attacks against echo-off password entry (e.g., for su and Sudo) because of an ObscureKeystrokeTiming logic error. Similarly, other timing attacks against keystroke entry could occur.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.6% · higher than 76% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
Openssh · Openbsd
9.5 through 9.7 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-39894
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-39894
www.openwall.com
http://www.openwall.com/lists/oss-security/2024/07/03/6
www.openwall.com
http://www.openwall.com/lists/oss-security/2024/07/23/4
www.openwall.com
http://www.openwall.com/lists/oss-security/2024/07/23/6
www.openwall.com
http://www.openwall.com/lists/oss-security/2024/07/28/3
crzphil.github.io
https://crzphil.github.io/posts/ssh-obfuscation-bypass/
lists.mindrot.org
https://lists.mindrot.org/pipermail/openssh-unix-announce/2024-July/000158.html
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