MGASA-2020-0277

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2020-9484
Published: 05 Jul 2020, 11:26
Last modified:16 Apr 2026, 04:25

Vulnerability Summary

Overall Risk (default)
minimal
0/100
CVSS Score
No data
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

05 Jul 2020, 11:26
Published
Vulnerability first disclosed
16 Apr 2026, 04:25
Last Modified
Vulnerability information updated

Description

Updated tomcat packages fix security vulnerability Updated tomcat packages fix security vulnerability: When using Apache Tomcat versions 9.0.0.M1 to 9.0.34, 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 (CVE-2020-9484).

Affected Systems

  • mageia•tomcat

    < 9.0.35-1.mga7

References (3)