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EulerOS 2.0 SP8 : openssh (EulerOS-SA-2020-1818)

high Nessus Plugin ID 139148

Synopsis

The remote EulerOS host is missing a security update.

Description

According to the version of the openssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerability :

 - The scp client in OpenSSH 8.2 incorrectly sends duplicate responses to the server upon a utimes system call failure, which allows a malicious unprivileged user on the remote server to overwrite arbitrary files in the client's download directory by creating a crafted subdirectory anywhere on the remote server. The victim must use the command scp -rp to download a file hierarchy containing, anywhere inside, this crafted subdirectory. NOTE: the vendor points out that 'this attack can achieve no more than a hostile peer is already able to achieve within the scp protocol' and 'utimes does not fail under normal circumstances.'(CVE-2020-12062)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected openssh package.

See Also

http://www.nessus.org/u?49e3f031

Plugin Details

Severity: High

ID: 139148

File Name: EulerOS_SA-2020-1818.nasl

Version: 1.5

Type: local

Published: 7/30/2020

Updated: 2/27/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS Score Source: CVE-2020-12062

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:huawei:euleros:openssh-askpass, p-cpe:/a:huawei:euleros:openssh-keycat, p-cpe:/a:huawei:euleros:openssh, p-cpe:/a:huawei:euleros:openssh-ldap, p-cpe:/a:huawei:euleros:openssh-cavs, p-cpe:/a:huawei:euleros:openssh-clients, p-cpe:/a:huawei:euleros:openssh-server, cpe:/o:huawei:euleros:2.0

Required KB Items: Host/local_checks_enabled, Host/EulerOS/release, Host/EulerOS/rpm-list, Host/EulerOS/sp

Excluded KB Items: Host/EulerOS/uvp_version

Exploit Ease: No known exploits are available

Patch Publication Date: 7/30/2020

Reference Information

CVE: CVE-2020-12062