CyberSecBulletin
CVE-2024-8417NVD status: Modified

yunke_online_school_system: Inclusion of Sensitive Information in Source Code

Published Updated By the CyberSecBulletin desk

CVE-2024-8417 is a high-severity inclusion of sensitive information in source code vulnerability in yunke_online_school_system from Yunknet, with a CVSS 3.1 base score of 8.1 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected yunke_online_school_system versions: 1.5.0 through 1.5.5. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.73% chance of exploitation within 30 days, higher than 55% of scored CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update Online School System to 1.5.6 or a later version.
  2. Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.

Affected products and versions

VendorProductAffected versionsFixed in
Yunknetyunke_online_school_system1.5.0 through 1.5.5Not stated
YunknetOnline School Systembefore 1.5.61.5.6

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
HighSuccess depends on conditions outside the attacker's control.
Privileges required
NoneNo account or login is needed.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
HighData or code can be modified at will.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.

Scoring systemScoreSeverityScored by
CVSS 4.02.3LowCNA (vuldb.com)
CVSS 3.13.1LowCNA (vuldb.com)
CVSS 3.18.1HighNVD
CVSS 2.02.1LowCNA (vuldb.com)

Official description

A vulnerability was found in 云课网络科技有限公司 Yunke Online School System up to 1.5.5. It has been declared as problematic. This vulnerability affects unknown code of the file /admin/educloud/videobind.html. The manipulation leads to inclusion of sensitive information in source code. The attack can be initiated remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 1.5.6 is able to address this issue. It is recommended to upgrade the affected component.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Inclusion of Sensitive Information in Source Code

The product (such as a web server or repository) provides access to source code is not intended to be accessible to users but contains sensitive information.

How developers prevent this class of flaw

  • Recommendations include removing the script from the web server and moving it to a location not accessible from the Internet.

More Inclusion of Sensitive Information in Source Code vulnerabilities (CWE-540)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: poc, automatable: no, technical impact: partial).
  3. Record last changed materially (score, affected products, status or references).

References

Third-party and government advisories

Technical write-ups (may include proof of concept)

Other references

Recent Inclusion of Sensitive Information in Source Code vulnerabilities

Spotted an error? Tell us.