CyberSecBulletin
CVE-2024-39598NVD status: Modified

SAP CRM WebClient UI: Server-Side Request Forgery

Published Updated By the CyberSecBulletin desk

CVE-2024-39598 is a high-severity server-side request forgery vulnerability in SAP CRM WebClient UI from SAP, with a CVSS 3.1 base score of 7.7 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. Affected SAP CRM WebClient UI versions: S4FND 102; S4FND 103; S4FND 104, and others listed below. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.31% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Check which version of SAP CRM WebClient UI you run against the affected versions below, and install the vendor's latest release.
  2. Read the advisory on url.sap for workarounds and exact fixed builds.

Affected products and versions

VendorProductAffected versionsFixed in
SAPSAP CRM WebClient UIS4FND 102; S4FND 103; S4FND 104; S4FND 105; S4FND 106; S4FND 107; S4FND 108; WEBCUIF 701; and 6 more rangesNot stated
SAPCustomer Relationship Management S4fnd102; 103; 104; 105; 106; 107; 108Not stated
SAPCustomer Relationship Management Webclient UI701; 731; 746; 747; 748; 800; 801Not stated

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
LowNo special conditions are needed; the attack works reliably.
Privileges required
LowA basic user account is enough.
User interaction
NoneNo action by a victim is required.
Scope
ChangedThe attack can reach beyond the vulnerable component into other systems.
Confidentiality
HighAll data handled by the component can be read.
Integrity
NoneNothing can be modified.
Availability
NoneAvailability is not affected.

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

Scoring systemScoreSeverityScored by
CVSS 3.15.0MediumCNA (sap.com)
CVSS 3.17.7HighNVD

Official description

SAP CRM (WebClient UI Framework) allows an authenticated attacker to enumerate accessible HTTP endpoints in the internal network by specially crafting HTTP requests. On successful exploitation this can result in information disclosure. It has no impact on integrity and availability of the application.

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

The underlying weakness: Server-Side Request Forgery

The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

How developers prevent this class of flaw

  • If there is a known list of applications, IP, hostname, and/or domains to which the product is allowed to communicate, then use allowlists to ensure that outgoing requests are restricted to these known entities. The allowlists could be in the application code or possibly enforced by firewalls or network segmentation.
  • If the product is expected to be able to connect to arbitrary IP addresses or domains, consider using a denylist that includes private network addresses, internal domain names, etc. The denylist could be in the application code or possibly enforced by firewalls or network segmentation.

More Server-Side Request Forgery vulnerabilities (CWE-918)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
  3. Record last changed materially (score, affected products, status or references).

References

Other references

Recent Server-Side Request Forgery vulnerabilities

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