Cloud FoundryCFOUNDRY:B2CC752B773C452B09347FA081810DAEUSN-3183-1: GnuTLS Vulnerabilities | Cloud Foundry
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.202 Low
EPSS
Percentile
96.3%
Severity
Medium
Vendor
Canonical Ubuntu
Versions Affected
- Canonical Ubuntu 14.04 LTS
Description
Stefan Buehler discovered that GnuTLS incorrectly verified the serial length of OCSP responses. A remote attacker could possibly use this issue to bypass certain certificate validation measures. This issue only applied to Ubuntu 16.04 LTS. (CVE-2016-7444)
Shi Lei discovered that GnuTLS incorrectly handled certain warning alerts.A remote attacker could possibly use this issue to cause GnuTLS to hang,resulting in a denial of service. This issue has only been addressed in Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-8610)
It was discovered that GnuTLS incorrectly decoded X.509 certificates with a Proxy Certificate Information extension. A remote attacker could use this issue to cause GnuTLS to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2017-5334)
It was discovered that GnuTLS incorrectly handled certain Open PGP certificates. A remote attacker could possibly use this issue to cause GnuTLS to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2017-5335, CVE-2017-5336, CVE-2017-5337)
Affected Cloud Foundry Products and Versions
Severity is medium unless otherwise noted.
- Cloud Foundry BOSH stemcells are vulnerable, including:
- 3151.x versions prior to 3151.11
- 3233.x versions prior to 3233.14
- 3263.x versions prior to 3263.20
- 3312.x versions prior to 3312.20
- 3363.x versions prior to 3363.9
- All versions of Cloud Foundry cflinuxfs2 prior to v1.99.0
Mitigation
OSS users are strongly encouraged to follow one of the mitigations below:
- The Cloud Foundry team recommends upgrading to the following BOSH stemcells:
- Upgrade 3151.x versions to 3151.11 or later
- Upgrade 3233.x versions to 3233.14 or later
- Upgrade 3263.x versions to 3263.20 or later
- Upgrade 3312.x versions to 3312.20 or later
- Upgrade 3363.x versions to 3363.9 or later
- The Cloud Foundry project recommends that Cloud Foundry deployments run with cflinuxfs2 v1.99.00 or later versions
References
Related
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.202 Low
EPSS
Percentile
96.3%