CVE-2021-21341High· 7.5▾ MidnightPoC availableXStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is vulnerability which may allow a remote attacker to allocate 100% CPU time on the target system depending on CPU type or para…
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 41.3 · likelihood 15.6 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Public exploit / PoC code seen in 1 source. Availability, not in-the-wild use.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
78%
2 GitHub repos (last check)
XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is vulnerability which may allow a remote attacker to allocate 100% CPU time on the target system depending on CPU type or parallel execution of such a payload resulting in a denial of service only by manipulating the processed input stream. No user is affected who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. If you rely on XStream's default blacklist of the Security Framework, you will have to use at least version 1.4.16.
oncommand_insightactivemq < 5.15.14activemq = 5.16.0activemq = 5.16.1jmeter < 5.5xstream < 1.4.16debian_linux = 9.0debian_linux = 10.0debian_linux = 11.0fedora = 33fedora = 34fedora = 35banking_enterprise_default_management = 2.10.0banking_enterprise_default_management = 2.12.0banking_platform = 2.4.0banking_platform = 2.7.1banking_platform = 2.9.0banking_platform = 2.12.0business_activity_monitoring = 11.1.1.9.0business_activity_monitoring = 12.2.1.3.0business_activity_monitoring = 12.2.1.4.0communications_billing_and_revenue_management_elastic_charging_engine = 12.0.0.3.0communications_unified_inventory_management = 7.3.2communications_unified_inventory_management = 7.3.4communications_unified_inventory_management = 7.3.5communications_unified_inventory_management = 7.4.0communications_unified_inventory_management = 7.4.1retail_xstore_point_of_service = 16.0.6retail_xstore_point_of_service = 17.0.4retail_xstore_point_of_service = 18.0.3retail_xstore_point_of_service = 19.0.2webcenter_portal = 11.1.1.9.0webcenter_portal = 12.2.1.3.0webcenter_portal = 12.2.1.4.0Upgrade past the affected range:
activemq 5.15.14jmeter 5.5xstream 1.4.16Connected by shared product, vendor, weakness, or advisory.
CVE-2021-21348Medium· 5.3XStream is a Java library to serialize objects to XML and back again
CVE-2021-21351Medium· 5.4XStream is a Java library to serialize objects to XML and back again
CVE-2021-21349Medium· 6.1XStream is a Java library to serialize objects to XML and back again
CVE-2021-21345Medium· 5.8XStream is a Java library to serialize objects to XML and back again
CVE-2021-21344Medium· 5.3XStream is a Java library to serialize objects to XML and back again
CVE-2021-21346Medium· 6.1XStream is a Java library to serialize objects to XML and back again