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high7.0

CVE-2020-9484

Potential remote code execution in Apache Tomcat

Impact

When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter="null" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.

Affected packages

EcosystemPackageAffectedFixed in
mavenorg.apache.tomcat:tomcat-catalina>= 10.0.0-M1, <= 10.0.0-M410.0.0-M5
mavenorg.apache.tomcat.embed:tomcat-embed-core>= 10.0.0-M1, <= 10.0.0-M410.0.0-M5

Affected products

VendorProductAffected versions
ApacheTomcat
from 7.0.0 before 7.0.108
from 8.5.0 before 8.5.63
from 9.0.1 before 9.0.43
Versions 9.0.0, 10.0.0
DebianDebian Linux
Versions 8.0, 9.0, 10.0
OpensuseLeap
Version 15.1
FedoraprojectFedora
Versions 31, 32
CanonicalUbuntu Linux
Versions 16.04, 20.04
OracleAgile Engineering Data Management
Version 6.2.1.0
OracleAgile Product Lifecycle Management
Versions 9.3.3, 9.3.5, 9.3.6
OracleCommunications Cloud Native Core Binding Support Function
Version 1.10.0
OracleCommunications Cloud Native Core Policy
Version 1.14.0
OracleCommunications Diameter Signaling Router
from 8.0.0.0 through 8.4.0.5
OracleCommunications Element Manager
from 8.2.0 through 8.2.2
OracleCommunications Instant Messaging Server
Version 10.0.1.4.0

Weakness classification

CWE-502

References