Deserialization in Apache Commons Collections
CVE-2015-6420
Serialized-object interfaces in certain Cisco Collaboration and Social Media; Endpoint Clients and Client Software; Network Application, Service, and Acceleration; Network and Content Security Devices; Network Management and Provisioning; Routing and Switching - Enterprise and Service Provider; Unified Computing; Voice and Unified Communications Devices; Video, Streaming, TelePresence, and Transcoding Devices; Wireless; and Cisco Hosted Services products allow remote attackers to execute arbitrary commands via a crafted serialized Java object, related to the Apache Commons Collections (ACC) library.
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: 0.186 (97.2th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.179 · newest: 0.186 · change: +0.007
Affected products
- Apache Commons Collections — versions 4.0
Weakness classification (CWE)
Public proof-of-concept exploits
- Leeziao/CVE-2015-6420
- ARPSyndicate/cvemon
- AdeliaNitzsche/Java-Deserialization-Cheat-Sheet
- AndreaRamirez17/POC_
- BrittanyKuhn/javascript-tutorial
- Cheatahh/jvm-reverseshell
- Draagon/draagon-metaobjects
- EitanSht/fake-vulnerabilities-java-maven
- GrrrDog/Java-Deserialization-Cheat-Sheet
- PalindromeLabs/Java-Deserialization-CVEs
References
- www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html (Third Party Advisory)
- h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay (Third Party Advisory)
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151209… (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/78872 (VDB Entry, Third Party Advisory, vdb-entry)
- www.tenable.com/security/research/tra-2017-23 (Third Party Advisory)
- h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay (Third Party Advisory)
- www.kb.cert.org/vuls/id/581311 (Third Party Advisory, third-party-advisory)
- www.tenable.com/security/research/tra-2017-14 (Third Party Advisory)
- lists.apache.org/thread.html/r352e40ca9874d1beb4ad95403792adca7eb295e6bc3bd7b65… (Vendor Advisory, mailing-list)
- af854a3a-2127-422b-91ae-364da2661108 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2015-6420?
- CVE-2015-6420 is a critical-severity vulnerability in Apache Commons Collections, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2015-12-15.
- How severe is CVE-2015-6420?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2015-6420 known to be exploited?
- 35 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.