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FreeBSD : rpm4 -- Multiple Vulnerabilities (0c52abde-717b-11ed-98ca-40b034429ecf)
medium Nessus Plugin ID 168328
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Synopsis
The remote FreeBSD host is missing one or more security-related updates.Description
The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the 0c52abde-717b-11ed-98ca-40b034429ecf advisory.- There is a flaw in RPM's signature functionality. OpenPGP subkeys are associated with a primary key via a binding signature. RPM does not check the binding signature of subkeys prior to importing them. If an attacker is able to add or socially engineer another party to add a malicious subkey to a legitimate public key, RPM could wrongly trust a malicious signature. The greatest impact of this flaw is to data integrity. To exploit this flaw, an attacker must either compromise an RPM repository or convince an administrator to install an untrusted RPM or public key. It is strongly recommended to only use RPMs and public keys from trusted sources. (CVE-2021-3521)
- A symbolic link issue was found in rpm. It occurs when rpm sets the desired permissions and credentials after installing a file. A local unprivileged user could use this flaw to exchange the original file with a symbolic link to a security-critical file and escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
(CVE-2021-35938)
- It was found that the fix for CVE-2017-7500 and CVE-2017-7501 was incomplete: the check was only implemented for the parent directory of the file to be created. A local unprivileged user who owns another ancestor directory could potentially use this flaw to gain root privileges. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2021-35939)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Update the affected packages.See Also
Plugin Details
Severity: Medium
ID: 168328
File Name: freebsd_pkg_0c52abde717b11ed98ca40b034429ecf.nasl
Version: 1.3
Type: local
Family: FreeBSD Local Security Checks
Published: 12/1/2022
Updated: 9/20/2023
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: Medium
Base Score: 6.5
Temporal Score: 5.1
Vector: CVSS2#AV:L/AC:L/Au:M/C:C/I:C/A:C
CVSS Score Source: CVE-2021-35939
CVSS v3
Risk Factor: Medium
Base Score: 6.7
Temporal Score: 6
Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:freebsd:freebsd:rpm4, cpe:/o:freebsd:freebsd
Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 12/1/2022
Vulnerability Publication Date: 2/22/2022