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Vulnerability Details :

CVE-2024-39894

Summary
Assigner-mitre
Assigner Org ID-8254265b-2729-46b6-b9e3-3dfca2d5bfca
Published At-02 Jul, 2024 | 00:00
Updated At-04 Nov, 2025 | 16:12
Rejected At-
Credits

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:mitre
Assigner Org ID:8254265b-2729-46b6-b9e3-3dfca2d5bfca
Published At:02 Jul, 2024 | 00:00
Updated At:04 Nov, 2025 | 16:12
Rejected At:
▼CVE Numbering Authority (CNA)

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.

Affected Products
Vendor
n/a
Product
n/a
Versions
Affected
  • n/a
Problem Types
TypeCWE IDDescription
textN/An/a
Type: text
CWE ID: N/A
Description: n/a
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.openssh.com/txt/release-9.8
N/A
https://lists.mindrot.org/pipermail/openssh-unix-announce/2024-July/000158.html
N/A
https://www.openwall.com/lists/oss-security/2024/07/02/1
N/A
http://www.openwall.com/lists/oss-security/2024/07/03/6
mailing-list
https://security.netapp.com/advisory/ntap-20240712-0004/
N/A
http://www.openwall.com/lists/oss-security/2024/07/23/4
mailing-list
http://www.openwall.com/lists/oss-security/2024/07/23/6
mailing-list
http://www.openwall.com/lists/oss-security/2024/07/28/3
mailing-list
https://crzphil.github.io/posts/ssh-obfuscation-bypass/
N/A
https://news.ycombinator.com/item?id=41508530
N/A
Hyperlink: https://www.openssh.com/txt/release-9.8
Resource: N/A
Hyperlink: https://lists.mindrot.org/pipermail/openssh-unix-announce/2024-July/000158.html
Resource: N/A
Hyperlink: https://www.openwall.com/lists/oss-security/2024/07/02/1
Resource: N/A
Hyperlink: http://www.openwall.com/lists/oss-security/2024/07/03/6
Resource:
mailing-list
Hyperlink: https://security.netapp.com/advisory/ntap-20240712-0004/
Resource: N/A
Hyperlink: http://www.openwall.com/lists/oss-security/2024/07/23/4
Resource:
mailing-list
Hyperlink: http://www.openwall.com/lists/oss-security/2024/07/23/6
Resource:
mailing-list
Hyperlink: http://www.openwall.com/lists/oss-security/2024/07/28/3
Resource:
mailing-list
Hyperlink: https://crzphil.github.io/posts/ssh-obfuscation-bypass/
Resource: N/A
Hyperlink: https://news.ycombinator.com/item?id=41508530
Resource: N/A
▼Authorized Data Publishers (ADP)
1. CISA ADP Vulnrichment
Affected Products
Vendor
OpenBSDopenbsd
Product
openssh
CPEs
  • cpe:2.3:a:openbsd:openssh:9.5:-:*:*:*:*:*:*
Default Status
unknown
Versions
Affected
  • From 9.5 through 9.7 (custom)
Problem Types
TypeCWE IDDescription
CWECWE-367CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition
Type: CWE
CWE ID: CWE-367
Description: CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition
Metrics
VersionBase scoreBase severityVector
3.17.5HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
2. CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.freebsd.org/security/advisories/FreeBSD-SA-25:01.openssh.asc
N/A
https://www.openssh.com/txt/release-9.8
x_transferred
https://lists.mindrot.org/pipermail/openssh-unix-announce/2024-July/000158.html
x_transferred
https://www.openwall.com/lists/oss-security/2024/07/02/1
x_transferred
http://www.openwall.com/lists/oss-security/2024/07/03/6
mailing-list
x_transferred
https://security.netapp.com/advisory/ntap-20240712-0004/
x_transferred
http://www.openwall.com/lists/oss-security/2024/07/23/4
mailing-list
x_transferred
http://www.openwall.com/lists/oss-security/2024/07/23/6
mailing-list
x_transferred
http://www.openwall.com/lists/oss-security/2024/07/28/3
mailing-list
x_transferred
http://seclists.org/fulldisclosure/2024/Sep/33
N/A
Hyperlink: https://www.freebsd.org/security/advisories/FreeBSD-SA-25:01.openssh.asc
Resource: N/A
Hyperlink: https://www.openssh.com/txt/release-9.8
Resource:
x_transferred
Hyperlink: https://lists.mindrot.org/pipermail/openssh-unix-announce/2024-July/000158.html
Resource:
x_transferred
Hyperlink: https://www.openwall.com/lists/oss-security/2024/07/02/1
Resource:
x_transferred
Hyperlink: http://www.openwall.com/lists/oss-security/2024/07/03/6
Resource:
mailing-list
x_transferred
Hyperlink: https://security.netapp.com/advisory/ntap-20240712-0004/
Resource:
x_transferred
Hyperlink: http://www.openwall.com/lists/oss-security/2024/07/23/4
Resource:
mailing-list
x_transferred
Hyperlink: http://www.openwall.com/lists/oss-security/2024/07/23/6
Resource:
mailing-list
x_transferred
Hyperlink: http://www.openwall.com/lists/oss-security/2024/07/28/3
Resource:
mailing-list
x_transferred
Hyperlink: http://seclists.org/fulldisclosure/2024/Sep/33
Resource: N/A
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:cve@mitre.org
Published At:02 Jul, 2024 | 18:15
Updated At:15 Apr, 2026 | 00:35

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.17.5HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Type: Secondary
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-367Secondary134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE ID: CWE-367
Type: Secondary
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
http://www.openwall.com/lists/oss-security/2024/07/03/6cve@mitre.org
N/A
http://www.openwall.com/lists/oss-security/2024/07/23/4cve@mitre.org
N/A
http://www.openwall.com/lists/oss-security/2024/07/23/6cve@mitre.org
N/A
http://www.openwall.com/lists/oss-security/2024/07/28/3cve@mitre.org
N/A
https://crzphil.github.io/posts/ssh-obfuscation-bypass/cve@mitre.org
N/A
https://lists.mindrot.org/pipermail/openssh-unix-announce/2024-July/000158.htmlcve@mitre.org
N/A
https://news.ycombinator.com/item?id=41508530cve@mitre.org
N/A
https://security.netapp.com/advisory/ntap-20240712-0004/cve@mitre.org
N/A
https://www.openssh.com/txt/release-9.8cve@mitre.org
N/A
https://www.openwall.com/lists/oss-security/2024/07/02/1cve@mitre.org
N/A
http://seclists.org/fulldisclosure/2024/Sep/33af854a3a-2127-422b-91ae-364da2661108
N/A
http://www.openwall.com/lists/oss-security/2024/07/03/6af854a3a-2127-422b-91ae-364da2661108
N/A
http://www.openwall.com/lists/oss-security/2024/07/23/4af854a3a-2127-422b-91ae-364da2661108
N/A
http://www.openwall.com/lists/oss-security/2024/07/23/6af854a3a-2127-422b-91ae-364da2661108
N/A
http://www.openwall.com/lists/oss-security/2024/07/28/3af854a3a-2127-422b-91ae-364da2661108
N/A
https://lists.mindrot.org/pipermail/openssh-unix-announce/2024-July/000158.htmlaf854a3a-2127-422b-91ae-364da2661108
N/A
https://security.netapp.com/advisory/ntap-20240712-0004/af854a3a-2127-422b-91ae-364da2661108
N/A
https://www.freebsd.org/security/advisories/FreeBSD-SA-25:01.openssh.ascaf854a3a-2127-422b-91ae-364da2661108
N/A
https://www.openssh.com/txt/release-9.8af854a3a-2127-422b-91ae-364da2661108
N/A
https://www.openwall.com/lists/oss-security/2024/07/02/1af854a3a-2127-422b-91ae-364da2661108
N/A
Hyperlink: http://www.openwall.com/lists/oss-security/2024/07/03/6
Source: cve@mitre.org
Resource: N/A
Hyperlink: http://www.openwall.com/lists/oss-security/2024/07/23/4
Source: cve@mitre.org
Resource: N/A
Hyperlink: http://www.openwall.com/lists/oss-security/2024/07/23/6
Source: cve@mitre.org
Resource: N/A
Hyperlink: http://www.openwall.com/lists/oss-security/2024/07/28/3
Source: cve@mitre.org
Resource: N/A
Hyperlink: https://crzphil.github.io/posts/ssh-obfuscation-bypass/
Source: cve@mitre.org
Resource: N/A
Hyperlink: https://lists.mindrot.org/pipermail/openssh-unix-announce/2024-July/000158.html
Source: cve@mitre.org
Resource: N/A
Hyperlink: https://news.ycombinator.com/item?id=41508530
Source: cve@mitre.org
Resource: N/A
Hyperlink: https://security.netapp.com/advisory/ntap-20240712-0004/
Source: cve@mitre.org
Resource: N/A
Hyperlink: https://www.openssh.com/txt/release-9.8
Source: cve@mitre.org
Resource: N/A
Hyperlink: https://www.openwall.com/lists/oss-security/2024/07/02/1
Source: cve@mitre.org
Resource: N/A
Hyperlink: http://seclists.org/fulldisclosure/2024/Sep/33
Source: af854a3a-2127-422b-91ae-364da2661108
Resource: N/A
Hyperlink: http://www.openwall.com/lists/oss-security/2024/07/03/6
Source: af854a3a-2127-422b-91ae-364da2661108
Resource: N/A
Hyperlink: http://www.openwall.com/lists/oss-security/2024/07/23/4
Source: af854a3a-2127-422b-91ae-364da2661108
Resource: N/A
Hyperlink: http://www.openwall.com/lists/oss-security/2024/07/23/6
Source: af854a3a-2127-422b-91ae-364da2661108
Resource: N/A
Hyperlink: http://www.openwall.com/lists/oss-security/2024/07/28/3
Source: af854a3a-2127-422b-91ae-364da2661108
Resource: N/A
Hyperlink: https://lists.mindrot.org/pipermail/openssh-unix-announce/2024-July/000158.html
Source: af854a3a-2127-422b-91ae-364da2661108
Resource: N/A
Hyperlink: https://security.netapp.com/advisory/ntap-20240712-0004/
Source: af854a3a-2127-422b-91ae-364da2661108
Resource: N/A
Hyperlink: https://www.freebsd.org/security/advisories/FreeBSD-SA-25:01.openssh.asc
Source: af854a3a-2127-422b-91ae-364da2661108
Resource: N/A
Hyperlink: https://www.openssh.com/txt/release-9.8
Source: af854a3a-2127-422b-91ae-364da2661108
Resource: N/A
Hyperlink: https://www.openwall.com/lists/oss-security/2024/07/02/1
Source: af854a3a-2127-422b-91ae-364da2661108
Resource: N/A

Change History

0
Information is not available yet

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