Patchfirst
CVE-2024-4879 KEVPublic exploit Critical · 9.8 EPSS >99.9%

ServiceNow Improper Input Validation Vulnerability

ServiceNow · Utah, Vancouver, and Washington DC Now Platform

Summary

ServiceNow's Now Platform, in the Vancouver and Washington DC releases, contains an input validation flaw (classified as improper validation of specified type of input). An unauthenticated remote attacker, requiring no user interaction, could execute code within the context of the Now Platform.

Official description · NVD

ServiceNow has addressed an input validation vulnerability that was identified in Vancouver and Washington DC Now Platform releases. This vulnerability could enable an unauthenticated user to remotely execute code within the context of the Now Platform. ServiceNow applied an update to hosted instances, and ServiceNow released the update to our partners and self-hosted customers. Listed below are the patches and hot fixes that address the vulnerability. If you have not done so already, we recommend applying security patches relevant to your instance as soon as possible.

Breakdown
69.9 / 100
Exploited
Yes, in CISA KEV
Reports
0
Tactics
3/15

How an attack unfolds

Based on mappings. Select a step to see the evidence.
  1. How attackers get in

  2. What they do

First seen exploited 13 days after disclosure. Public exploit code (PoC-in-GitHub) appeared 2 days after disclosure.

  1. Disclosedday 0
  2. Public exploit codePoC-in-GitHub+2 days
  3. First seen exploitedVulnCheck KEV evidence+13 days
  4. Added to CISA KEVEU database agrees+19 days

CISA KEV listing is when exploitation was confirmed, not necessarily the first attack.

techniques

3 , grouped by in kill-chain order 3

Initial AccessTA0001

MITRE CTID mapping of the KEV entry · primary impact

CVE-2024-4879 is a Template Injection Vulnerability in ServiceNow UI Macros. When ServiceNow instances are installed public-facing instead of internally, they can be exploited for arbitrary code execution. Adversaries have been observed selling data exfiltrated through this exploit.

ExecutionTA0002

MITRE CTID mapping of the KEV entry · how it is exploited

CollectionTA0009

MITRE CTID mapping of the KEV entry · primary impact

Detection

0 rules for this CVE · 258 general rules for its techniques

Rules for this CVE

0 that reference CVE-2024-4879 directly.

CVE-specific rules are not available in this build. Search SigmaHQ ↗

General rules for this CVE’s techniques

These detect the technique in general, not this specific vulnerability.

Sigma rules © SigmaHQ, Detection Rule License 1.1; linked, not reproduced.

What security researchers reported

Not named in any threat report yet

Also mentioned in 50 community threat pulses (AlienVault OTX)

Weaker evidence

Pulses are indicator collections that anyone can publish. A mention is not confirmation of exploitation.

References

4 links, grouped by NVD tag (3 duplicates merged)
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