Detections
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Oracle Linux 7 : openssh (ELSA-2021-9575)

high Nessus Plugin ID 155926

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Synopsis

The remote Oracle Linux host is missing a security update.

Description

The remote Oracle Linux 7 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2021-9575 advisory.

 [7.4p1-22.0.1_fips]
 - Change Epoch from 1 to 10
 - Enable fips KDF POST [Orabug: 32461750]
 - Disable diffie-hellman-group-exchange-sha256 KEX FIPS method [Orabug: 32461739]

 [7.4p1-22.0.1]
 - enlarge format buffer size for certificate serial number so the log message can record any 64-bit integer without truncation (openssh bz#3012) [Orabug: 30448895]

 [7.4p1-22 + 0.10.3-2]
 - avoid segfault in Kerberos cache cleanup (#1999263)
 - fix CVE-2021-41617 (#2008884)

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://linux.oracle.com/errata/ELSA-2021-9575.html

Plugin Details

Severity: High

ID: 155926

File Name: oraclelinux_ELSA-2021-9575.nasl

Version: 1.4

Type: local

Agent: unix

Published: 12/8/2021

Updated: 10/23/2024

Supported Sensors: Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 4.4

Temporal Score: 3.3

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

CVSS Score Source: CVE-2021-41617

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.1

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

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

Vulnerability Information

CPE: p-cpe:/a:oracle:linux:openssh-askpass, p-cpe:/a:oracle:linux:openssh-server-sysvinit, p-cpe:/a:oracle:linux:openssh-clients, p-cpe:/a:oracle:linux:pam_ssh_agent_auth, cpe:/o:oracle:linux:7, p-cpe:/a:oracle:linux:openssh-ldap, p-cpe:/a:oracle:linux:openssh, p-cpe:/a:oracle:linux:openssh-cavs, p-cpe:/a:oracle:linux:openssh-keycat, p-cpe:/a:oracle:linux:openssh-server

Required KB Items: Host/OracleLinux, Host/RedHat/release, Host/RedHat/rpm-list, Host/local_checks_enabled

Exploit Ease: No known exploits are available

Patch Publication Date: 12/7/2021

Vulnerability Publication Date: 9/26/2021

Reference Information

CVE: CVE-2021-41617

IAVA: 2021-A-0474-S