Detections
Analytics
RHEL 6 : krb5-appl (Unpatched Vulnerability)
high Nessus Plugin ID 196544
Synopsis
The remote Red Hat 6 host is affected by multiple vulnerabilities that will not be patched.Description
The remote Redhat Enterprise Linux 6 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.- krb5-appl: Improper validation of object names allows malicious server to overwrite files via rcp client (CVE-2019-25017)
- krb5-appl: Improper directory name validation allows malicious server to bypass access restrictions (CVE-2019-25018)
- telnetd in GNU Inetutils through 2.3, MIT krb5-appl through 1.0.3, and derivative works has a NULL pointer dereference via 0xff 0xf7 or 0xff 0xf8. In a typical installation, the telnetd application would crash but the telnet service would remain available through inetd. However, if the telnetd application has many crashes within a short time interval, the telnet service would become unavailable after inetd logs a telnet/tcp server failing (looping), service terminated error. NOTE: MIT krb5-appl is not supported upstream but is shipped by a few Linux distributions. The affected code was removed from the supported MIT Kerberos 5 (aka krb5) product many years ago, at version 1.8. (CVE-2022-39028)
Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.
Solution
The vendor has acknowledged the vulnerabilities but no solution has been provided. Refer to the vendor for remediation guidance.Plugin Details
Severity: High
ID: 196544
File Name: redhat_unpatched-krb5-appl-rhel6.nasl
Version: 1.0
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 5/11/2024
Updated: 5/11/2024
Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.4
CVSS v2
Risk Factor: Medium
Base Score: 5.8
Temporal Score: 4.5
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:P
CVSS Score Source: CVE-2019-25017
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.7
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:P/RL:O/RC:C
CVSS Score Source: CVE-2019-25018
Vulnerability Information
CPE: cpe:/o:redhat:enterprise_linux:6, p-cpe:/a:redhat:enterprise_linux:krb5-appl
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Available: true
Exploit Ease: Exploits are available
Vulnerability Publication Date: 2/2/2021