CVE-2020-1938 Detail Modified This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided. Current Description When using the Apache JServ Protocol (AJP), care must be taken when trusting incoming connections to Apache Tomcat. Tomcat treats AJP connections as having higher trust than, for example, a similar HTTP connection. If such connections are available to an attacker, they can be exploited in ways that may be surprising. In Apache Tomcat 9.0.0.M1 to 9.0.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99, Tomcat shipped with an AJP Connector enabled by default that listened on all configured IP addresses. It was expected (and recommended in the security guide) that this Connector would be disabled if not required. This vulnerability report identified a mechanism that allowed: - returning arbitrary files from anywhere in the web application - processing any file in the web application as a JSP Further, if the web application allowed file upload and stored those files within the web application (or the attacker was able to control the content of the web application by some other means) then this, along with the ability to process a file as a JSP, made remote code execution possible. It is important to note that mitigation is only required if an AJP port is accessible to untrusted users. Users wishing to take a defence-in-depth approach and block the vector that permits returning arbitrary files and execution as JSP may upgrade to Apache Tomcat 9.0.31, 8.5.51 or 7.0.100 or later. A number of changes were made to the default AJP Connector configuration in 9.0.31 to harden the default configuration. It is likely that users upgrading to 9.0.31, 8.5.51 or 7.0.100 or later will need to make small changes to their configurations.

View Analysis Description Analysis Description When using the Apache JServ Protocol (AJP), care must be taken when trusting incoming connections to Apache Tomcat. Tomcat treats AJP connections as having higher trust than, for example, a similar HTTP connection. If such connections are available to an attacker, they can be exploited in ways that may be surprising. In Apache Tomcat 9.0.0.M1 to 9.0.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99, Tomcat shipped with an AJP Connector enabled by default that listened on all configured IP addresses. It was expected (and recommended in the security guide) that this Connector would be disabled if not required. This vulnerability report identified a mechanism that allowed: - returning arbitrary files from anywhere in the web application - processing any file in the web application as a JSP Further, if the web application allowed file upload and stored those files within the web application (or the attacker was able to control the content of the web application by some other means) then this, along with the ability to process a file as a JSP, made remote code execution possible. It is important to note that mitigation is only required if an AJP port is accessible to untrusted users. Users wishing to take a defence-in-depth approach and block the vector that permits returning arbitrary files and execution as JSP may upgrade to Apache Tomcat 9.0.31, 8.5.51 or 7.0.100 or later. A number of changes were made to the default AJP Connector configuration in 9.0.31 to harden the default configuration. It is likely that users upgrading to 9.0.31, 8.5.51 or 7.0.100 or later will need to make small changes to their configurations. Severity CVSS Version 3.x CVSS Version 2.0



CVSS 3.x Severity and Metrics:

NIST: NVD Base Score: 9.8 CRITICAL Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS 2.0 Severity and Metrics:



NIST: NVD Base Score: 7.5 HIGH Vector: (AV:N/AC:L/Au:N/C:P/I:P/A:P) Weakness Enumeration CWE-ID CWE Name Source CWE-20 Improper Input Validation NIST Known Affected Software Configurations Switch to CPE 2.2 CPEs loading, please wait. Denotes Vulnerable Software

Are we missing a CPE here? Please let us know.

Change History 37 change records found show changes CVE Modified by MITRE 8/31/2020 10:15:16 AM Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/rf1bbc0ea4a9f014cf94df9a12a6477d24a27f52741dbc87f2fd52ff2@%3Cissues.geode.apache.org%3E [No Types Assigned]



CVE Modified by MITRE 7/23/2020 6:15:12 PM Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/r92d78655c068d0bc991d1edbdfb24f9c5134603e647cade1113d4e0a@%3Cusers.tomee.apache.org%3E [No Types Assigned]



CVE Modified by MITRE 7/14/2020 11:15:51 PM Action Type Old Value New Value Added Reference https://www.oracle.com/security-alerts/cpujul2020.html [No Types Assigned]



CVE Modified by MITRE 6/28/2020 8:15:12 AM Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/r8f7484589454638af527182ae55ef5b628ba00c05c5b11887c922fb1@%3Cnotifications.ofbiz.apache.org%3E [No Types Assigned]



Added Reference https://lists.apache.org/thread.html/ra7092f7492569b39b04ec0decf52628ba86c51f15efb38f5853e2760@%3Cnotifications.ofbiz.apache.org%3E [No Types Assigned]



CVE Modified by MITRE 6/25/2020 8:15:13 PM Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/rb1c0fb105ce2b93b7ec6fc1b77dd208022621a91c12d1f580813cfed@%3Cdev.tomcat.apache.org%3E [No Types Assigned]



CVE Modified by MITRE 5/28/2020 4:15:11 PM Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2020/05/msg00026.html [No Types Assigned]



CVE Modified by MITRE 5/07/2020 9:15:12 AM Action Type Old Value New Value Added Reference https://www.debian.org/security/2020/dsa-4680 [No Types Assigned]



CVE Modified by MITRE 5/04/2020 8:15:12 AM Action Type Old Value New Value Added Reference https://www.debian.org/security/2020/dsa-4673 [No Types Assigned]



CVE Modified by MITRE 5/01/2020 8:15:13 PM Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00002.html [No Types Assigned]



CVE Modified by MITRE 4/16/2020 3:15:28 PM Action Type Old Value New Value Added Reference http://support.blackberry.com/kb/articleDetail?articleNumber=000062739 [No Types Assigned]



CVE Modified by MITRE 4/13/2020 4:15:12 PM Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/r43faacf64570b1d9a4bada407a5af3b2738b0c007b905f1b6b608c65@%3Cusers.tomcat.apache.org%3E [No Types Assigned]



CVE Modified by MITRE 4/02/2020 8:15:15 AM Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/K3IPNHCKFVUKSHDTM45UL4Q765EHHTFG/ [No Types Assigned]



CVE Modified by MITRE 4/02/2020 7:15:15 AM Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L46WJIV6UV3FWA5O5YEY6XLA73RYD53B/ [No Types Assigned]



CVE Modified by MITRE 3/30/2020 10:15:13 PM Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2XFLQB3O5QVP4ZBIPVIXBEZV7F2R7ZMS/ [No Types Assigned]



CVE Modified by MITRE 3/23/2020 7:15:11 AM Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/r6a5633cad1b560a1e51f5b425f02918bdf30e090fdf18c5f7c2617eb@%3Ccommits.tomee.apache.org%3E [No Types Assigned]



CVE Modified by MITRE 3/20/2020 7:15:16 AM Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/rcd5cd301e9e7e39f939baf2f5d58704750be07a5e2d3393e40ca7194@%3Ccommits.tomee.apache.org%3E [No Types Assigned]



Added Reference https://lists.apache.org/thread.html/rf992c5adf376294af31378a70aa8a158388a41d7039668821be28df3@%3Ccommits.tomee.apache.org%3E [No Types Assigned]



CVE Modified by MITRE 3/19/2020 4:15:12 PM Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202003-43 [No Types Assigned]



CVE Modified by MITRE 3/19/2020 7:15:11 AM Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/rf26663f42e7f1a1d1cac732469fb5e92c89908a48b61ec546dbb79ca@%3Cbugs.httpd.apache.org%3E [No Types Assigned]



CVE Modified by MITRE 3/16/2020 10:15:14 AM Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/rc068e824654c4b8bd4f2490bec869e29edbfcd5dfe02d47cbf7433b2@%3Cdev.tomee.apache.org%3E [No Types Assigned]



CVE Modified by MITRE 3/15/2020 6:15:14 PM Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00025.html [No Types Assigned]



CVE Modified by MITRE 3/11/2020 6:29:26 PM Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/r089dc67c0358a1556dd279c762c74f32d7a254a54836b7ee2d839d8e@%3Cdev.tomee.apache.org%3E [No Types Assigned]



Added Reference https://lists.apache.org/thread.html/rbdb1d2b651a3728f0ceba9e0853575b6f90296a94a71836a15f7364a@%3Cdev.tomee.apache.org%3E [No Types Assigned]



CVE Modified by MITRE 3/10/2020 7:15:11 AM Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/r9f119d9ce9239114022e13dbfe385b3de7c972f24f05d6dbd35c1a2f@%3Cusers.tomcat.apache.org%3E [No Types Assigned]



CVE Modified by MITRE 3/10/2020 6:15:11 AM Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/r4f86cb260196e5cfcbbe782822c225ddcc70f54560f14a8f11c6926f@%3Cusers.tomcat.apache.org%3E [No Types Assigned]



CVE Modified by MITRE 3/09/2020 8:15:10 PM Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/r61f280a76902b594692f0b24a1dbf647bb5a4c197b9395e9a6796e7c@%3Cusers.tomcat.apache.org%3E [No Types Assigned]



CVE Modified by MITRE 3/09/2020 12:15:12 PM Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/r549b43509e387a42656f0641fa311bf27c127c244fe02007d5b8d6f6@%3Cdev.tomcat.apache.org%3E [No Types Assigned]



Added Reference https://lists.apache.org/thread.html/r5e2f1201b92ee05a0527cfc076a81ea0c270be299b87895c0ddbe02b@%3Cusers.tomcat.apache.org%3E [No Types Assigned]



CVE Modified by MITRE 3/05/2020 4:15:18 AM Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/re5eecbe5bf967439bafeeaa85987b3a43f0e6efe06b6976ee768cde2@%3Cusers.tomcat.apache.org%3E [No Types Assigned]



CVE Modified by MITRE 3/04/2020 3:15:10 PM Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2020/03/msg00006.html [No Types Assigned]



CVE Modified by MITRE 3/04/2020 9:15:10 AM Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/r772335e6851ad33ddb076218fa4ff70de1bf398d5b43e2ddf0130e5d@%3Cdev.tomcat.apache.org%3E [No Types Assigned]



CVE Modified by MITRE 3/04/2020 8:15:11 AM Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/r4afa11e0464408e68f0e9560e90b185749363a66398b1491254f7864@%3Cusers.tomcat.apache.org%3E [No Types Assigned]



CVE Modified by MITRE 3/02/2020 7:15:12 AM Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/r17aaa3a05b5b7fe9075613dd0c681efa60a4f8c8fbad152c61371b6e@%3Cusers.tomcat.apache.org%3E [No Types Assigned]



Added Reference https://lists.apache.org/thread.html/r38a5b7943b9a62ecb853acc22ef08ff586a7b3c66e08f949f0396ab1@%3Cusers.tomcat.apache.org%3E [No Types Assigned]



Added Reference https://lists.apache.org/thread.html/rd50baccd1bbb96c2327d5a8caa25a49692b3d68d96915bd1cfbb9f8b@%3Cusers.tomcat.apache.org%3E [No Types Assigned]



CVE Modified by MITRE 3/01/2020 8:15:10 PM Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/rb2fc890bef23cbc7f343900005fe1edd3b091cf18dada455580258f9@%3Cusers.tomcat.apache.org%3E [No Types Assigned]



CVE Modified by MITRE 2/28/2020 11:15:11 AM Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/rad36ec6a1ffc9e43266b030c22ceeea569243555d34fb4187ff08522@%3Cnotifications.ofbiz.apache.org%3E [No Types Assigned]



CVE Modified by MITRE 2/28/2020 8:15:11 AM Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/rce2af55f6e144ffcdc025f997eddceb315dfbc0b230e3d750a7f7425@%3Cnotifications.ofbiz.apache.org%3E [No Types Assigned]



CVE Modified by MITRE 2/27/2020 11:15:11 AM Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/r74328b178f9f37fe759dffbc9c1f2793e66d79d7a8a20d3836551794@%3Cnotifications.ofbiz.apache.org%3E [No Types Assigned]



Added Reference https://lists.apache.org/thread.html/rd0774c95699d5aeb5e16e9a600fb2ea296e81175e30a62094e27e3e7@%3Ccommits.ofbiz.apache.org%3E [No Types Assigned]



Initial Analysis 2/27/2020 10:39:45 AM Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* versions from (including) 7.0.0 up to (including) 7.0.99 *cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* versions from (including) 8.5.0 up to (including) 8.5.50 *cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* versions from (including) 9.0.0 up to (including) 9.0.30



Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)



Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H



Added CWE NIST CWE-20



Changed Reference Type https://lists.apache.org/thread.html/r75113652e46c4dee687236510649acfb70d2c63e074152049c3f399d@%3Cnotifications.ofbiz.apache.org%3E No Types Assigned



https://lists.apache.org/thread.html/r75113652e46c4dee687236510649acfb70d2c63e074152049c3f399d@%3Cnotifications.ofbiz.apache.org%3E Mailing List, Vendor Advisory



Changed Reference Type https://lists.apache.org/thread.html/r7c6f492fbd39af34a68681dbbba0468490ff1a97a1bd79c6a53610ef%40%3Cannounce.tomcat.apache.org%3E No Types Assigned



https://lists.apache.org/thread.html/r7c6f492fbd39af34a68681dbbba0468490ff1a97a1bd79c6a53610ef%40%3Cannounce.tomcat.apache.org%3E Mailing List, Vendor Advisory



Changed Reference Type https://lists.apache.org/thread.html/r856cdd87eda7af40b50278d6de80ee4b42d63adeb433a34a7bdaf9db@%3Cnotifications.ofbiz.apache.org%3E No Types Assigned



https://lists.apache.org/thread.html/r856cdd87eda7af40b50278d6de80ee4b42d63adeb433a34a7bdaf9db@%3Cnotifications.ofbiz.apache.org%3E Mailing List, Vendor Advisory



Changed Reference Type https://security.netapp.com/advisory/ntap-20200226-0002/ No Types Assigned



https://security.netapp.com/advisory/ntap-20200226-0002/ Third Party Advisory



CVE Modified by MITRE 2/26/2020 1:15:11 PM Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20200226-0002/ [No Types Assigned]



CVE Modified by MITRE 2/25/2020 4:15:10 AM Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/r75113652e46c4dee687236510649acfb70d2c63e074152049c3f399d@%3Cnotifications.ofbiz.apache.org%3E [No Types Assigned]



Added Reference https://lists.apache.org/thread.html/r856cdd87eda7af40b50278d6de80ee4b42d63adeb433a34a7bdaf9db@%3Cnotifications.ofbiz.apache.org%3E [No Types Assigned]



Quick Info CVE Dictionary Entry:

CVE-2020-1938

NVD Published Date:

02/24/2020

NVD Last Modified:

08/31/2020

Source:

MITRE

