CVE-2020-9484

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Summary

CVECVE-2020-9484
StatePUBLISHED
Assignerapache
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-05-20 19:15:09 UTC
Updated2026-08-25 16:28:27 UTC
DescriptionWhen 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.

Risk And Classification

Primary CVSS: v3.1 7 HIGH from [email protected]

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem Types: CWE-502 | Remote Code Execution

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
2.0[email protected]Primary4.4AV:L/AC:M/Au:N/C:P/I:P/A:P

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial

AV:L/AC:M/Au:N/C:P/I:P/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Apache Tomcat All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na Apache Tomcat affected Apache Tomcat 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54, 7.0.0 to 7.0.103 Not specified

References

ReferenceSourceLinkTags
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
lists.apache.org/thread.html/rc1778b38e74b5b6142414d57623bd55b023a72361f422836... af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Oracle Critical Patch Update Advisory - October 2021 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
lists.apache.org/thread.html/rfe62fbf9d4c314f166fe8c668e50e5d9dd882a99447f26f0... af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
lists.apache.org/thread.html/r8a2ac0e476dbfc1e6440b09dcc782d444ad635d6da26f028... af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Oracle Critical Patch Update Advisory - July 2021 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
USN-4596-1: Tomcat vulnerabilities | Ubuntu security notices | Ubuntu af854a3a-2127-422b-91ae-364da2661108 usn.ubuntu.com Third Party Advisory
Apache Tomcat CVE-2020-9484 Proof Of Concept ≈ Packet Storm af854a3a-2127-422b-91ae-364da2661108 packetstormsecurity.com Third Party Advisory, VDB Entry
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Oracle Critical Patch Update Advisory - January 2021 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
[SECURITY] [DLA 2279-1] tomcat8 security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
Debian -- Security Information -- DSA-4727-1 tomcat9 af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org Mailing List, Mitigation, Patch, Third Party Advisory
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
USN-4448-1: Tomcat vulnerabilities | Ubuntu security notices | Ubuntu af854a3a-2127-422b-91ae-364da2661108 usn.ubuntu.com Third Party Advisory
Oracle Critical Patch Update Advisory - January 2022 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
Oracle Critical Patch Update Advisory - July 2022 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com
Oracle Critical Patch Update Advisory - April 2021 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
[SECURITY] [DLA 2217-1] tomcat7 security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Third Party Advisory
McAfee Security Bulletin - ePolicy Orchestrator update addresses multiple vulnerabilities (CVE-2020-7317, CVE-2020-7318, CVE-2020-13935, CVE-2020-9484, CVE-2020-14621, CVE-2020-14573, CVE-2020-14578, CVE-2020-14579, CVE-2020-14581, CVE-2020-2754, CVE-2020-2755, CVE-2020-2756, CVE-2020-2757, CVE-2020-2764, CVE-2020-2773) af854a3a-2127-422b-91ae-364da2661108 kc.mcafee.com Third Party Advisory
Oracle Critical Patch Update Advisory - October 2020 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Apache Tomcat: Remote code execution (GLSA 202006-21) — Gentoo security af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org Third Party Advisory
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
[SECURITY] Fedora 31 Update: tomcat-9.0.36-1.fc31 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
lists.apache.org/thread.html/rfe62fbf9d4c314f166fe8c668e50e5d9dd882a99447f26f0... af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
[SECURITY] [DLA 2209-1] tomcat8 security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Third Party Advisory
[SECURITY] Fedora 32 Update: tomcat-9.0.36-1.fc32 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
Full Disclosure: [CVE-2020-9484] Apache Tomcat RCE via PersistentManager af854a3a-2127-422b-91ae-364da2661108 seclists.org Mailing List, Third Party Advisory
lists.apache.org/thread.html/rfe62fbf9d4c314f166fe8c668e50e5d9dd882a99447f26f0... af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
lists.apache.org/thread.html/rf6d5d57b114678d8898005faef31e9fd6d7c981fcc4ccfc3... af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
oss-security - CVE-2021-25329: Apache Tomcat Incomplete fix for CVE-2020-9484 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List, Third Party Advisory
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
lists.apache.org/thread.html/rb51ccd58b2152fc75125b2406fc93e04ca9d34e737263faa... af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Oracle Critical Patch Update Advisory - July 2020 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
CVE-2020-9484 Apache Tomcat Vulnerability in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com Third Party Advisory
lists.apache.org/thread.html/r11ce01e8a4c7269b88f88212f21830edf73558997ac7744f... af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
[security-announce] openSUSE-SU-2020:0711-1: important: Security update af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org Third Party Advisory
[SECURITY] Fedora 31 Update: tomcat-9.0.36-1.fc31 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
[SECURITY] Fedora 32 Update: tomcat-9.0.36-1.fc32 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
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Legacy QID Mappings

  • 174905 SUSE Enterprise Linux Security Update for tomcat (SUSE-SU-2021:0988-1)
  • 174906 SUSE Enterprise Linux Security Update for tomcat (SUSE-SU-2021:0989-1)
  • 174912 SUSE Enterprise Linux Security Update for tomcat (SUSE-SU-2021:1009-1)
  • 174941 SUSE Enterprise Linux Security Update for tomcat (SUSE-SU-2021:1008-1)
  • 174964 SUSE Enterprise Linux Security Update for tomcat (SUSE-SU-2021:1431-1)
  • 178492 Debian Security Update for tomcat8 (DLA 2596-1)
  • 181163 Debian Security Update for tomcat9 (DLA 3160-1)
  • 181177 Debian Security Update for tomcat9 (DSA 5265-1)
  • 198724 Ubuntu Security Notification for Tomcat Vulnerabilities (USN-5360-1)
  • 20275 Oracle Database 18c Critical OJVM Patch Update - April 2021
  • 20278 Oracle Database 19c Critical OJVM Patch Update - April 2021
  • 296062 Oracle Solaris 11.4 Support Repository Update (SRU) 43.113.3 Missing (CPUJAN2022)
  • 296074 Oracle Solaris 11.4 Support Repository Update (SRU) 22.69.4 Missing (CPUAPR2020)
  • 352256 Amazon Linux Security Advisory for tomcat8: ALAS-2021-1491
  • 352262 Amazon Linux Security Advisory for tomcat7: ALAS-2021-1493
  • 352298 Amazon Linux Security Update for tomcat7: AL2012-2021-341
  • 356283 Amazon Linux Security Advisory for tomcat : ALASTOMCAT8.5-2023-008
  • 356300 Amazon Linux Security Advisory for tomcat : ALASTOMCAT8.5-2023-009
  • 377006 Alibaba Cloud Linux Security Update for tomcat (ALINUX2-SA-2020:0099)
  • 670219 EulerOS Security Update for tomcat (EulerOS-SA-2021-1856)
  • 670309 EulerOS Security Update for tomcat (EulerOS-SA-2021-1915)
  • 670333 EulerOS Security Update for tomcat (EulerOS-SA-2021-1891)
  • 670677 EulerOS Security Update for tomcat (EulerOS-SA-2021-2435)
  • 730510 Atlassian Jira Remote Code Execution (RCE) Vulnerability (JRASERVER-73223)
  • 730575 Atlassian Jira Server and Data Center Multiple Servlet Apache Tomcat Vulnerability (JRASERVER-73739)
  • 730646 Apache Tomcat Local Privilege Escalation Vulnerability (CVE-2020-9484)
  • 730651 Apache Tomcat Local Privilege Escalation Vulnerability (CVE-2020-9484)
  • 730656 Apache Tomcat Request mix-up with h2c Vulnerability (CVE-2021-25122)
  • 730660 Apache Tomcat Local Privilege Escalation Vulnerability (CVE-2020-9484)
  • 730662 Apache Tomcat Request mix-up with h2c Vulnerability (CVE-2021-25122)
  • 730666 Apache Tomcat Local Privilege Escalation Vulnerability (CVE-2020-9484)
  • 730668 Apache Tomcat Request mix-up with h2c Vulnerability (CVE-2021-25122)
  • 750285 OpenSUSE Security Update for tomcat (openSUSE-SU-2021:0496-1)
  • 982093 Java (maven) Security Update for org.apache.tomcat.embed:tomcat-embed-core (GHSA-344f-f5vg-2jfj)

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