Huawei EulerOS: Security Advisory for ruby (EulerOS-SA-2018-1275)

Published: 2020-01-23 11:19:47
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:N/AC:L/Au:N/C:P/I:P/A:P

Summary:
The remote host is missing an update for the Huawei EulerOS 'ruby' Linux Distribution Package(s) announced via the EulerOS-SA-2018-1275 advisory.

Detection Method:
Checks if a vulnerable Linux Distribution Package version is present on the target host.

Technical Details:
It was found that the tmpdir and tempfile modules did not sanitize their file name argument. An attacker with control over the name could create temporary files and directories outside of the dedicated directory.(CVE-2018-6914) A integer underflow was found in the way String#unpack decodes the unpacking format. An attacker, able to control the unpack format, could use this flaw to disclose arbitrary parts of the application's memory.(CVE-2018-8778) It was found that the UNIXSocket::open and UNIXServer::open ruby methods did not handle the NULL byte properly. An attacker, able to inject NULL bytes in the socket path, could possibly trigger an unspecified behavior of the ruby script.(CVE-2018-8779) It was found that the methods from the Dir class did not properly handle strings containing the NULL byte. An attacker, able to inject NULL bytes in a path, could possibly trigger an unspecified behavior of the ruby script.(CVE-2018-8780) It was found that WEBrick could be forced to use an excessive amount of memory during the processing of HTTP requests, leading to a Denial of Service. An attacker could use this flaw to send huge requests to a WEBrick application, resulting in the server running out of memory.(CVE-2018-8777)

Affected Versions:
'ruby' Linux Distribution Package(s) on Huawei EulerOS Virtualization 2.5.1.

Recommendations:
Please install the updated Linux Distribution Package(s).

Solution Type:
Vendor Patch

Detection Type:
Linux Distribution Package

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2018-6914
https://nvd.nist.gov/vuln/detail/CVE-2018-8777
https://nvd.nist.gov/vuln/detail/CVE-2018-8778
https://nvd.nist.gov/vuln/detail/CVE-2018-8779
https://nvd.nist.gov/vuln/detail/CVE-2018-8780

References:

https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2018-1275

Severity
High
CVSS Score
7.5
Published
2020-01-23
Modified
2020-01-23
Category
Huawei EulerOS Local Security Checks

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