VDB-110920 · CVE-2017-16818 · Nessus 105932

Ceph up to 12.1.0 RADOS Gateway rgw/rgw_iam_policy.cc 7pk security

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.3	$0-$5k	0.00

Summaryinfo

A vulnerability described as problematic has been identified in Ceph up to 12.1.0. The impacted element is an unknown function of the file rgw/rgw_iam_policy.cc of the component RADOS Gateway. Executing a manipulation can lead to 7pk security. This vulnerability is registered as CVE-2017-16818. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Ceph up to 12.1.0 and classified as problematic. This vulnerability affects an unknown code block of the file rgw/rgw_iam_policy.cc of the component RADOS Gateway. The manipulation with an unknown input leads to a 7pk security vulnerability. The CWE definition for the vulnerability is CWE-254. As an impact it is known to affect availability. CVE summarizes:

RADOS Gateway in Ceph 12.1.0 through 12.2.1 allows remote authenticated users to cause a denial of service (assertion failure and application exit) by leveraging "full" (not necessarily admin) privileges to post an invalid profile to the admin API, related to rgw/rgw_iam_policy.cc, rgw/rgw_basic_types.h, and rgw/rgw_iam_types.h.

The bug was discovered 11/21/2017. The weakness was published 12/20/2017 (Website). The advisory is shared for download at lists.fedoraproject.org. This vulnerability was named CVE-2017-16818 since 11/14/2017. The exploitation appears to be easy. The attack can be initiated remotely. The requirement for exploitation is a single authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1211.

The vulnerability was handled as a non-public zero-day exploit for at least 21 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 105932 (Fedora 27 : 1:ceph (2017-97b730736f)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171533 (OpenSUSE Security Update for ceph (openSUSE-SU-2018:2479-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (105932). Similar entry is available at VDB-114784. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Ceph

Version

License

open-source

Website

Product: https://github.com/ceph/ceph/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: 7pk security
CWE: CWE-254
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 105932
Nessus Name: Fedora 27 : 1:ceph (2017-97b730736f)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 55002
OpenVAS Name: Fedora Update for ceph FEDORA-2017-97b730736f
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

11/14/2017 🔍
11/21/2017 +7 days 🔍
12/12/2017 +21 days 🔍
12/20/2017 +8 days 🔍
12/20/2017 +0 days 🔍
12/21/2017 +1 days 🔍
01/15/2018 +25 days 🔍
01/18/2023 +1829 days 🔍