6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.4 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:P/A:N
0.001 Low
EPSS
Percentile
49.2%
Medium
Canonical Ubuntu
Philip Turnbull discovered that libssh incorrectly handled rekeying with algorithm guessing. A remote attacker could use this issue to cause libssh to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2023-1667) Kevin Backhouse discovered that libssh incorrectly handled verifying data signatures. A remote attacker could possibly use this issue to bypass authorization. (CVE-2023-2283) Update Instructions: Run sudo pro fix USN-6138-1
to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: libssh-gcrypt-dev – 0.9.6-2ubuntu0.22.04.1 libssh-doc – 0.9.6-2ubuntu0.22.04.1 libssh-4 – 0.9.6-2ubuntu0.22.04.1 libssh-dev – 0.9.6-2ubuntu0.22.04.1 libssh-gcrypt-4 – 0.9.6-2ubuntu0.22.04.1 No subscription required
CVEs contained in this USN include: CVE-2023-1667, CVE-2023-2283.
Severity is medium unless otherwise noted.
Users of affected products are strongly encouraged to follow the mitigations below. The Cloud Foundry project recommends upgrading the following releases:
2023-06-29: Initial vulnerability report published.
CPE | Name | Operator | Version |
---|---|---|---|
cflinuxfs4 | lt | 1.16.0 | |
jammy stemcells | lt | 1.147 | |
cf deployment | lt | 1.147 |
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.4 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:P/A:N
0.001 Low
EPSS
Percentile
49.2%