CVE-2020-1938KEV · OVERDUE

Apache Tomcat Improper Privilege Management Vulnerability

Critical · published February 25, 2020

Patch now

Confirmed exploited, and the score agrees

CVSS calls it critical at 9.8. It is confirmed in active exploitation. It sits in the 99.9th percentile for exploit probability.

1682
days past CISA
deadline
CVSS v3.1
9.8
EPSS
99%
Percentile
99.9
In the wild
Confirmed
What it is

🚨 A single AJP connection is all it takes to turn your Tomcat server into a playground for attackers! 🔥 Think of it as a trusted delivery service that, instead of verifying packages, drops them off at the front door without checking — a sneaky way for an unwanted visitor to mix in with your deliveries! 📦 An attacker could exploit this vulnerability to read arbitrary files, execute malicious JSP code, and gain control over your server. It's like leaving the front door wide open and inviting a burglar in to have a party — any sensitive data or functionality could be at risk!

Put simply

Think of it as a trusted delivery service that, instead of verifying packages, drops them off at the front door without checking — a sneaky way for an unwanted visitor to mix in with your deliveries! 📦 This vulnerability arises from the AJP protocol in Apache Tomcat, which incorrectly trusts incoming connections, allowing attackers to return arbitrary files and potentially execute remote code if they can upload files within the web application.

What to do

An attacker could exploit this vulnerability to read arbitrary files, execute malicious JSP code, and gain control over your server. It's like leaving the front door wide open and inviting a burglar in to have a party — any sensitive data or functionality could be at risk! To secure your server, upgrade to Apache Tomcat versions 9.0.31, 8.5.51, or 7.0.100 or later. If AJP is not needed, consider disabling it altogether to avoid any risk. A thorough audit of your configuration settings is also recommended! You’ve got this! By upgrading and tightening those settings, you’ll make your server a fortress! 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.99270 · 99.9th percentile
Published
2020-02-25T03:15Z
KEV added
2022-03-03 · due 2022-03-17
Affected products (38)
ProductVersionsFixed in
apache/geodeall versions—
apache/tomcat≥ 7.0.0, < 7.0.1007.0.100
apache/tomcat≥ 8.5.0, < 8.5.518.5.51
apache/tomcat≥ 9.0.0, < 9.0.319.0.31
fedoraproject/fedoraall versions—
fedoraproject/fedoraall versions—
fedoraproject/fedoraall versions—
oracle/agile_engineering_data_managementall versions—
oracle/agile_product_lifecycle_managementall versions—
oracle/agile_product_lifecycle_managementall versions—
oracle/agile_product_lifecycle_managementall versions—
oracle/communications_element_managerall versions—
oracle/communications_element_managerall versions—
oracle/communications_element_managerall versions—
oracle/communications_instant_messaging_serverall versions—
oracle/health_sciences_empirica_inspectionsall versions—
oracle/health_sciences_empirica_signalall versions—
oracle/hospitality_guest_accessall versions—
oracle/hospitality_guest_accessall versions—
oracle/instantis_enterprisetrack≥ 17.1, ≤ 17.3—
oracle/mysql_enterprise_monitor≤ 4.0.12—
oracle/mysql_enterprise_monitor≥ 8.0.0, ≤ 8.0.20—
oracle/siebel_ui_framework≤ 20.5—
oracle/transportation_managementall versions—
oracle/workload_managerall versions—
oracle/workload_managerall versions—
oracle/workload_managerall versions—
debian/debian_linuxall versions—
debian/debian_linuxall versions—
debian/debian_linuxall versions—
opensuse/leapall versions—
blackberry/good_control≤ 5.2.58.38—
blackberry/workspaces_serverall versions—
blackberry/workspaces_serverall versions—
blackberry/workspaces_serverall versions—
blackberry/workspaces_serverall versions—
netapp/data_availability_servicesall versions—
netapp/oncommand_system_manager≥ 3.0.0, ≤ 3.1.3—
References (103)
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[email protected]https://lists.apache.org/thread.html/r47caef01f663106c2bb81d116b8380d62beac9e543dd3f3bc2c2beda%40%3Ccommits.tomee.apache.org%3E · [email protected]https://lists.apache.org/thread.html/r4afa11e0464408e68f0e9560e90b185749363a66398b1491254f7864%40%3Cusers.tomcat.apache.org%3E · [email protected]https://lists.apache.org/thread.html/r4f86cb260196e5cfcbbe782822c225ddcc70f54560f14a8f11c6926f%40%3Cusers.tomcat.apache.org%3E · [email protected]https://lists.apache.org/thread.html/r549b43509e387a42656f0641fa311bf27c127c244fe02007d5b8d6f6%40%3Cdev.tomcat.apache.org%3E · [email protected]https://lists.apache.org/thread.html/r57f5e4ced436ace518a9e222fabe27fb785f09f5bf974814cc48ca97%40%3Ccommits.tomee.apache.org%3E · [email protected]https://lists.apache.org/thread.html/r5e2f1201b92ee05a0527cfc076a81ea0c270be299b87895c0ddbe02b%40%3Cusers.tomcat.apache.org%3E · [email protected]https://lists.apache.org/thread.html/r61f280a76902b594692f0b24a1dbf647bb5a4c197b9395e9a6796e7c%40%3Cusers.tomcat.apache.org%3E · [email protected]https://lists.apache.org/thread.html/r6a5633cad1b560a1e51f5b425f02918bdf30e090fdf18c5f7c2617eb%40%3Ccommits.tomee.apache.org%3E · [email protected]https://lists.apache.org/thread.html/r74328b178f9f37fe759dffbc9c1f2793e66d79d7a8a20d3836551794%40%3Cnotifications.ofbiz.apache.org%3E · [email protected]https://lists.apache.org/thread.html/r75113652e46c4dee687236510649acfb70d2c63e074152049c3f399d%40%3Cnotifications.ofbiz.apache.org%3E · [email protected]https://lists.apache.org/thread.html/r772335e6851ad33ddb076218fa4ff70de1bf398d5b43e2ddf0130e5d%40%3Cdev.tomcat.apache.org%3E · [email protected]https://lists.apache.org/thread.html/r7c6f492fbd39af34a68681dbbba0468490ff1a97a1bd79c6a53610ef%40%3Cannounce.tomcat.apache.org%3E · [email protected]https://lists.apache.org/thread.html/r856cdd87eda7af40b50278d6de80ee4b42d63adeb433a34a7bdaf9db%40%3Cnotifications.ofbiz.apache.org%3E · [email protected]https://lists.apache.org/thread.html/r8f7484589454638af527182ae55ef5b628ba00c05c5b11887c922fb1%40%3Cnotifications.ofbiz.apache.org%3E · [email protected]https://lists.apache.org/thread.html/r90890afea72a9571d666820b2fe5942a0a5f86be406fa31da3dd0922%40%3Cannounce.apache.org%3E · [email protected]https://lists.apache.org/thread.html/r92d78655c068d0bc991d1edbdfb24f9c5134603e647cade1113d4e0a%40%3Cusers.tomee.apache.org%3E · [email protected]https://lists.apache.org/thread.html/r9f119d9ce9239114022e13dbfe385b3de7c972f24f05d6dbd35c1a2f%40%3Cusers.tomcat.apache.org%3E · [email protected]https://lists.apache.org/thread.html/ra7092f7492569b39b04ec0decf52628ba86c51f15efb38f5853e2760%40%3Cnotifications.ofbiz.apache.org%3E · [email protected]https://lists.apache.org/thread.html/rad36ec6a1ffc9e43266b030c22ceeea569243555d34fb4187ff08522%40%3Cnotifications.ofbiz.apache.org%3E · [email protected]https://lists.apache.org/thread.html/rb1c0fb105ce2b93b7ec6fc1b77dd208022621a91c12d1f580813cfed%40%3Cdev.tomcat.apache.org%3E · [email protected]https://lists.apache.org/thread.html/rb2fc890bef23cbc7f343900005fe1edd3b091cf18dada455580258f9%40%3Cusers.tomcat.apache.org%3E · [email protected]https://lists.apache.org/thread.html/rbdb1d2b651a3728f0ceba9e0853575b6f90296a94a71836a15f7364a%40%3Cdev.tomee.apache.org%3E · [email protected]https://lists.apache.org/thread.html/rc068e824654c4b8bd4f2490bec869e29edbfcd5dfe02d47cbf7433b2%40%3Cdev.tomee.apache.org%3E · [email protected]https://lists.apache.org/thread.html/rcd5cd301e9e7e39f939baf2f5d58704750be07a5e2d3393e40ca7194%40%3Ccommits.tomee.apache.org%3E · [email protected]https://lists.apache.org/thread.html/rce2af55f6e144ffcdc025f997eddceb315dfbc0b230e3d750a7f7425%40%3Cnotifications.ofbiz.apache.org%3E · [email protected]https://lists.apache.org/thread.html/rd0774c95699d5aeb5e16e9a600fb2ea296e81175e30a62094e27e3e7%40%3Ccommits.ofbiz.apache.org%3E · [email protected]https://lists.apache.org/thread.html/rd50baccd1bbb96c2327d5a8caa25a49692b3d68d96915bd1cfbb9f8b%40%3Cusers.tomcat.apache.org%3E · [email protected]https://lists.apache.org/thread.html/re5eecbe5bf967439bafeeaa85987b3a43f0e6efe06b6976ee768cde2%40%3Cusers.tomcat.apache.org%3E · [email protected]https://lists.apache.org/thread.html/rf1bbc0ea4a9f014cf94df9a12a6477d24a27f52741dbc87f2fd52ff2%40%3Cissues.geode.apache.org%3E · [email protected]https://lists.apache.org/thread.html/rf26663f42e7f1a1d1cac732469fb5e92c89908a48b61ec546dbb79ca%40%3Cbugs.httpd.apache.org%3E · [email protected]https://lists.apache.org/thread.html/rf992c5adf376294af31378a70aa8a158388a41d7039668821be28df3%40%3Ccommits.tomee.apache.org%3E · [email protected]https://lists.debian.org/debian-lts-announce/2020/03/msg00006.html · [email protected]https://lists.debian.org/debian-lts-announce/2020/05/msg00026.html · [email protected]https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2XFLQB3O5QVP4ZBIPVIXBEZV7F2R7ZMS/ · [email protected]https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K3IPNHCKFVUKSHDTM45UL4Q765EHHTFG/ · [email protected]https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L46WJIV6UV3FWA5O5YEY6XLA73RYD53B/ · [email protected]https://security.gentoo.org/glsa/202003-43 · [email protected]https://security.netapp.com/advisory/ntap-20200226-0002/ · [email protected]https://www.debian.org/security/2020/dsa-4673 · [email protected]https://www.debian.org/security/2020/dsa-4680 · [email protected]https://www.oracle.com/security-alerts/cpujan2021.html · [email protected]https://www.oracle.com/security-alerts/cpujul2020.html · [email protected]https://www.oracle.com/security-alerts/cpuoct2020.html · [email protected]http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00025.html · af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00002.html · af854a3a-2127-422b-91ae-364da2661108http://support.blackberry.com/kb/articleDetail?articleNumber=000062739 · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r089dc67c0358a1556dd279c762c74f32d7a254a54836b7ee2d839d8e%40%3Cdev.tomee.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r1125f3044a0946d1e7e6f125a6170b58d413ebd4a95157e4608041c7%40%3Cannounce.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r17aaa3a05b5b7fe9075613dd0c681efa60a4f8c8fbad152c61371b6e%40%3Cusers.tomcat.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r38a5b7943b9a62ecb853acc22ef08ff586a7b3c66e08f949f0396ab1%40%3Cusers.tomcat.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r43faacf64570b1d9a4bada407a5af3b2738b0c007b905f1b6b608c65%40%3Cusers.tomcat.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r47caef01f663106c2bb81d116b8380d62beac9e543dd3f3bc2c2beda%40%3Ccommits.tomee.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r4afa11e0464408e68f0e9560e90b185749363a66398b1491254f7864%40%3Cusers.tomcat.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r4f86cb260196e5cfcbbe782822c225ddcc70f54560f14a8f11c6926f%40%3Cusers.tomcat.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r549b43509e387a42656f0641fa311bf27c127c244fe02007d5b8d6f6%40%3Cdev.tomcat.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r57f5e4ced436ace518a9e222fabe27fb785f09f5bf974814cc48ca97%40%3Ccommits.tomee.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r5e2f1201b92ee05a0527cfc076a81ea0c270be299b87895c0ddbe02b%40%3Cusers.tomcat.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r61f280a76902b594692f0b24a1dbf647bb5a4c197b9395e9a6796e7c%40%3Cusers.tomcat.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r6a5633cad1b560a1e51f5b425f02918bdf30e090fdf18c5f7c2617eb%40%3Ccommits.tomee.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r74328b178f9f37fe759dffbc9c1f2793e66d79d7a8a20d3836551794%40%3Cnotifications.ofbiz.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r75113652e46c4dee687236510649acfb70d2c63e074152049c3f399d%40%3Cnotifications.ofbiz.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r772335e6851ad33ddb076218fa4ff70de1bf398d5b43e2ddf0130e5d%40%3Cdev.tomcat.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r7c6f492fbd39af34a68681dbbba0468490ff1a97a1bd79c6a53610ef%40%3Cannounce.tomcat.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r856cdd87eda7af40b50278d6de80ee4b42d63adeb433a34a7bdaf9db%40%3Cnotifications.ofbiz.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r8f7484589454638af527182ae55ef5b628ba00c05c5b11887c922fb1%40%3Cnotifications.ofbiz.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r90890afea72a9571d666820b2fe5942a0a5f86be406fa31da3dd0922%40%3Cannounce.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r92d78655c068d0bc991d1edbdfb24f9c5134603e647cade1113d4e0a%40%3Cusers.tomee.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r9f119d9ce9239114022e13dbfe385b3de7c972f24f05d6dbd35c1a2f%40%3Cusers.tomcat.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/ra7092f7492569b39b04ec0decf52628ba86c51f15efb38f5853e2760%40%3Cnotifications.ofbiz.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/rad36ec6a1ffc9e43266b030c22ceeea569243555d34fb4187ff08522%40%3Cnotifications.ofbiz.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/rb1c0fb105ce2b93b7ec6fc1b77dd208022621a91c12d1f580813cfed%40%3Cdev.tomcat.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/rb2fc890bef23cbc7f343900005fe1edd3b091cf18dada455580258f9%40%3Cusers.tomcat.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/rbdb1d2b651a3728f0ceba9e0853575b6f90296a94a71836a15f7364a%40%3Cdev.tomee.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/rc068e824654c4b8bd4f2490bec869e29edbfcd5dfe02d47cbf7433b2%40%3Cdev.tomee.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/rcd5cd301e9e7e39f939baf2f5d58704750be07a5e2d3393e40ca7194%40%3Ccommits.tomee.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/rce2af55f6e144ffcdc025f997eddceb315dfbc0b230e3d750a7f7425%40%3Cnotifications.ofbiz.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/rd0774c95699d5aeb5e16e9a600fb2ea296e81175e30a62094e27e3e7%40%3Ccommits.ofbiz.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/rd50baccd1bbb96c2327d5a8caa25a49692b3d68d96915bd1cfbb9f8b%40%3Cusers.tomcat.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/re5eecbe5bf967439bafeeaa85987b3a43f0e6efe06b6976ee768cde2%40%3Cusers.tomcat.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/rf1bbc0ea4a9f014cf94df9a12a6477d24a27f52741dbc87f2fd52ff2%40%3Cissues.geode.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/rf26663f42e7f1a1d1cac732469fb5e92c89908a48b61ec546dbb79ca%40%3Cbugs.httpd.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/rf992c5adf376294af31378a70aa8a158388a41d7039668821be28df3%40%3Ccommits.tomee.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2020/03/msg00006.html · af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2020/05/msg00026.html · af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2XFLQB3O5QVP4ZBIPVIXBEZV7F2R7ZMS/ · af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K3IPNHCKFVUKSHDTM45UL4Q765EHHTFG/ · af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L46WJIV6UV3FWA5O5YEY6XLA73RYD53B/ · af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202003-43 · af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20200226-0002/ · af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2020/dsa-4673 · af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2020/dsa-4680 · af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpujan2021.html · af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpujul2020.html · af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpuoct2020.html · af854a3a-2127-422b-91ae-364da2661108https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1938 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 03 MAR 00:00Z
    Added to CISA KEV — remediate by Mar 17
    kev
  • 24 FEB 21:19Z
    When using the Apache JServ Protocol (AJP), care must be taken when trusting incoming connections to Apache Tomcat
    cvelistv5