Detections
Analytics

TencentOS Server 3: idm:DL1 (TSSA-2024:0307)

high Nessus Plugin ID 276411

Synopsis

The remote TencentOS Server 3 host is missing one or more security updates.

Description

The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2024:0307 advisory.

 Package updates are available for TencentOS Server 3 that fix the following vulnerabilities:

 CVE-2024-2698:
 A vulnerability was found in FreeIPA in how the initial implementation of MS-SFU by MIT Kerberos was missing a condition for granting the forwardable flag on S4U2Self tickets. Fixing this mistake required adding a special case for the check_allowed_to_delegate() function: If the target service argument is NULL, then it means the KDC is probing for general constrained delegation rules and not checking a specific S4U2Proxy request.

 In FreeIPA 4.11.0, the behavior of ipadb_match_acl() was modified to match the changes from upstream MIT Kerberos 1.20. However, a mistake resulting in this mechanism applies in cases where the target service argument is set AND where it is unset. This results in S4U2Proxy requests being accepted regardless of whether or not there is a matching service delegation rule.

 CVE-2024-3183:
 A vulnerability was found in FreeIPA in a way when a Kerberos TGS-REQ is encrypted using the clients session key. This key is different for each new session, which protects it from brute force attacks.
 However, the ticket it contains is encrypted using the target principal key directly. For user principals, this key is a hash of a public per-principal randomly-generated salt and the users password.

 If a principal is compromised it means the attacker would be able to retrieve tickets encrypted to any principal, all of them being encrypted by their own key directly. By taking these tickets and salts offline, the attacker could run brute force attacks to find character strings able to decrypt tickets when combined to a principal salt (i.e. find the principals password).

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

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

https://mirrors.tencent.com/tlinux/errata/tssa-20240307.xml

Plugin Details

Severity: High

ID: 276411

File Name: tencentos_TSSA_2024_0307.nasl

Version: 1.1

Type: local

Published: 11/20/2025

Updated: 11/20/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 8.5

Temporal Score: 6.7

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

CVSS Score Source: CVE-2024-3183

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.3

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

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

Vulnerability Information

CPE: p-cpe:/a:tencent:tencentos_server:bind-dyndb-ldap, p-cpe:/a:tencent:tencentos_server:ipa-healthcheck, cpe:/o:tencent:tencentos_server:3, p-cpe:/a:tencent:tencentos_server:python-kdcproxy, p-cpe:/a:tencent:tencentos_server:python-yubico, p-cpe:/a:tencent:tencentos_server:pyusb, p-cpe:/a:tencent:tencentos_server:python-jwcrypto, p-cpe:/a:tencent:tencentos_server:ipa, p-cpe:/a:tencent:tencentos_server:slapi-nis, p-cpe:/a:tencent:tencentos_server:python-qrcode

Required KB Items: Host/local_checks_enabled, Host/etc/os-release, Host/TencentOS/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/10/2024

Vulnerability Publication Date: 6/10/2024

Reference Information

CVE: CVE-2024-2698, CVE-2024-3183