Cloud Foundry Foundation cflinuxfs3 update for OpenSSL
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 4 |
| CVE-ID | CVE-2022-3996 CVE-2023-0466 CVE-2023-0464 CVE-2023-0465 |
| CWE-ID | CWE-667 CWE-254 CWE-400 CWE-347 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
cflinuxfs3 Other software / Other software solutions |
| Vendor | Cloud Foundry Foundation |
Security Bulletin
This security bulletin contains information about 4 vulnerabilities.
1) Improper locking
EUVDB-ID: #VU70142
Risk: Low
CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2022-3996
CWE-ID:
CWE-667 - Improper Locking
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service attack (DoS).
The vulnerability exists due to double-locking error if an X.509 certificate contains a malformed policy constraint and policy processing is enabled. A remote attacker can under certain circumstances perform a denial of service attack against the web server.
Successful exploitation of the vulnerability requires that policy processing being enabled on the server.
Install update from vendor's website.
Vulnerable software versionscflinuxfs3: before 0.364.0
External linkshttp://github.com/cloudfoundry/cflinuxfs3/releases/tag/0.364.0
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Security features bypass
EUVDB-ID: #VU74149
Risk: Low
CVSSv3.1: 4.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-0466
CWE-ID:
CWE-254 - Security Features
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform MitM attack.
The vulnerability exists due to an error within the X509_VERIFY_PARAM_add0_policy() function, which does not perform the certificate policy check despite being implicitly enabled. A remote attacker can bypass expected security restrictions and perform MitM attack.
Install update from vendor's website.
Vulnerable software versionscflinuxfs3: before 0.364.0
External linkshttp://github.com/cloudfoundry/cflinuxfs3/releases/tag/0.364.0
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Resource exhaustion
EUVDB-ID: #VU73960
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-0464
CWE-ID:
CWE-400 - Resource exhaustion
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources when verifying X.509 certificate chains that include policy constraints. A remote attacker can create a specially crafted certificate to trigger resource exhaustion and perform a denial of service (DoS) attack.
MitigationInstall update from vendor's website.
Vulnerable software versionscflinuxfs3: before 0.364.0
External linkshttp://github.com/cloudfoundry/cflinuxfs3/releases/tag/0.364.0
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
4) Improper Verification of Cryptographic Signature
EUVDB-ID: #VU74148
Risk: Low
CVSSv3.1: 4.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-0465
CWE-ID:
CWE-347 - Improper Verification of Cryptographic Signature
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform MitM attack.
The vulnerability exists due to an error when validating certificate policies in leaf certificates. A remote attacker that controls a malicious CA server can issue a certificate that will be validated by the application.
Install update from vendor's website.
Vulnerable software versionscflinuxfs3: before 0.364.0
External linkshttp://github.com/cloudfoundry/cflinuxfs3/releases/tag/0.364.0
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
