Apple macOS up to 10.14.0 Ruby response splitting

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

A vulnerability was found in Apple macOS up to 10.14.0 (Operating System). It has been declared as critical. Affected by this vulnerability is some unknown functionality of the component Ruby. The manipulation with an unknown input leads to a response splitting vulnerability. The CWE definition for the vulnerability is CWE-113. The product receives data from an HTTP agent/component (e.g., web server, proxy, browser, etc.), but it does not neutralize or incorrectly neutralizes CR and LF characters before the data is included in outgoing HTTP headers. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1 allows an HTTP Response Splitting attack. An attacker can inject a crafted key and value into an HTTP response for the HTTP server of WEBrick.

The bug was discovered 03/28/2018. The weakness was released 10/29/2018 as HT209193 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. This vulnerability is known as CVE-2017-17742 since 12/18/2017. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The advisory points out:

Multiple issues in Ruby were addressed in this update.

The vulnerability was handled as a non-public zero-day exploit for at least 6 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 111081 (Debian DLA-1421-1 : ruby2.1 security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 237072 (Red Hat Update for rh-ruby25-ruby (RHSA-2018:3731)).

Upgrading to version 10.14.1 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (111081). Entries connected to this vulnerability are available at 114428, 114429, 114430 and 114431.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.2

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Response splitting
CWE: CWE-113 / CWE-93 / CWE-74
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 111081
Nessus Name: Debian DLA-1421-1 : ruby2.1 security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 860813
OpenVAS Name: Debian LTS Advisory ([SECURITY] [DLA 1358-1] ruby1.9.1 security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: macOS 10.14.1

Timelineinfo

12/18/2017 🔍
03/28/2018 +100 days 🔍
03/28/2018 +0 days 🔍
04/03/2018 +6 days 🔍
07/16/2018 +104 days 🔍
10/29/2018 +105 days 🔍
10/29/2018 +0 days 🔍
10/31/2018 +1 days 🔍
06/03/2023 +1676 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT209193
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-17742 (🔍)
OVAL: 🔍

SecurityTracker: 1042004
SecurityFocus: 103686 - Ruby CVE-2018-6914 Directory Traversal Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20180712
See also: 🔍

Entryinfo

Created: 10/31/2018 11:51
Updated: 06/03/2023 17:22
Changes: 10/31/2018 11:51 (70), 04/09/2020 08:31 (16), 06/03/2023 17:22 (4)
Complete: 🔍

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