Ubuntu.comUB:CVE-2024-39894CVE-2024-39894
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
10.7%
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.
Notes
| Author | Note |
|---|---|
| seth-arnold | openssh-ssh1 is provided for compatibility with old devices that cannot be upgraded to modern protocols. Thus we may not provide security support for this package if doing so would prevent access to equipment. |
| mdeslaur | This is a feature introduced in 9.5, previous versions don’t have this feature at all. |
References
launchpad.net/bugs/cve/CVE-2024-39894
lists.mindrot.org/pipermail/openssh-unix-announce/2024-July/000158.html
nvd.nist.gov/vuln/detail/CVE-2024-39894
security-tracker.debian.org/tracker/CVE-2024-39894
ubuntu.com/security/notices/USN-6887-1
www.cve.org/CVERecord?id=CVE-2024-39894
www.openssh.com/txt/release-9.8
www.openwall.com/lists/oss-security/2024/07/02/1
Related
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
10.7%