Deserialization in Apache Log4j
CVE-2017-5645
In Apache Log4j 2.x before 2.8.2, when using the TCP socket server or UDP socket server to receive serialized log events from another application, a specially crafted binary payload can be sent that, when deserialized, can execute arbitrary code.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.898 (99.8th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.898 · newest: 0.898 · change: 0.000
Affected products
- Apache Log4j
- Apache Software Foundation Log4j — versions All versions between 2.0-alpha1 and 2.8.1
- NetApp Oncommand API Services
- NetApp Oncommand Insight
- NetApp Oncommand Workflow Automation
- NetApp Service Level Manager
- NetApp Snapcenter
- NetApp Storage Automation Store
- Oracle API Gateway — versions 11.1.2.4.0
- Oracle Application Testing Suite — versions 13.3.0.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- access.redhat.com/errata/RHSA-2017:2888 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2017:2809 (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/97702 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securitytracker.com/id/1041294 (VDB Entry, Third Party Advisory, vdb-entry)
- access.redhat.com/errata/RHSA-2017:2810 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2017:1801 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2017:2889 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2017:2635 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2017:2638 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2017:1417 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-5645?
- CVE-2017-5645 is a critical-severity vulnerability in Apache Log4j, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2017-04-17.
- How severe is CVE-2017-5645?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2017-5645 known to be exploited?
- 51 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.