Background exploitation KEV catalog No authentication

CVE-2024-4879

ServiceNow Improper Input Validation Vulnerability

CheckOps priority index

9.1/10 Patch within 24 h

Severity9.3

Probability10.0

Exploitation4/5

Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.

EPSS · today 99.98% higher than 99.98% of CVEs

CVSS 4.0 9.3 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/

Exploited for 827 days 29 Jul 2024

CISA due date 19 Aug 2024 for US federal agencies

Exploitation probability EPSS · FIRST

EPSS probability (%)Percentile among all CVEs

Exploitation signals 4 / 5

KEV catalog (CISA)29 Jul 2024
Exploited in EUVD (ENISA)29 Jul 2024
Used by ransomwareno
EPSS above 10 %99.98%
No account, over the networkyes

What to do

Fix

Apply the vendor’s fix as soon as it is available.

CISA guidance: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Meanwhile

Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.

Manufacturers (CRA)

Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained

Description ENISA EUVD

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.

Affected products

Now PlatformUtah, Vancouver, and Washington DC Now Platform

Affected versions

0 <Washington DC Patch 3 Hot Fix 1
0 <Vancouver Patch 7 Hot Fix 3b
0 <Utah Patch 10 Hot Fix 3
0 <Washington DC Patch 1 Hot Fix 2b
0 <Vancouver Patch 6 Hot Fix 2
0 <Vancouver Patch 10
0 <Vancouver Patch 8 Hot Fix 4
0 <Vancouver Patch 9
0 <Utah Patch 10a Hot Fix 2
0 <Washington DC Patch 4
0 <Washington DC Patch 2 Hot Fix 2

Weaknesses (CWE)

CWE-1287

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

10 Jul 2024
Published
29 Jul 2024
Exploitation reported (ENISA)
29 Jul 2024
Added to the KEV catalog
19 Aug 2024
CISA remediation due date
25 Sept 2026
EPSS peak: 99.98%

References

Other exploited vulnerabilities from the same vendor

CVE-2024-5217ServiceNow Incomplete List of Disallowed Inputs Vulnerability
9.1 · Background exploitation