CVE-2020-1938
CVE-2020-1938
This page contains facts from public vulnerability sources. Check the original advisory before updating.
This page shows selected source facts. See the linked advisories for the complete description and affected versions.
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.
CVSS 9.8 · Critical · EPSS 99.3% · In KEV · Public exploit · Fix available
- Published
- Updated
Stack: system
Affected products and versions
apache tomcat
- Versions
- Apache Tomcat 9.0.0.M1 to 9.0.0.30: Affected
- 8.5.0 to 8.5.50: Affected
- 7.0.0 to 7.0.99: Affected
No fix published
tomcat9 Debian:12
- Affected ranges
- ECOSYSTEM: < 9.0.31-1
Update to 9.0.31-1
tomcat9 Debian:13
- Affected ranges
- ECOSYSTEM: < 9.0.31-1
Update to 9.0.31-1
tomcat9 Debian:14
- Affected ranges
- ECOSYSTEM: < 9.0.31-1
Update to 9.0.31-1
tomcat7 Ubuntu:Pro:14.04:LTS
- Versions
- 7.0.42-1
- 7.0.47-1
- 7.0.50-1
- 7.0.52-1
- 7.0.52-1ubuntu0.1
- 7.0.52-1ubuntu0.3
- 7.0.52-1ubuntu0.6
- 7.0.52-1ubuntu0.7
- 7.0.52-1ubuntu0.8
- 7.0.52-1ubuntu0.9
- 7.0.52-1ubuntu0.10
- 7.0.52-1ubuntu0.11
- 7.0.52-1ubuntu0.13
- 7.0.52-1ubuntu0.14
- 7.0.52-1ubuntu0.15
- 7.0.52-1ubuntu0.16
- 7.0.52-1ubuntu0.16+esm1
- 7.0.52-1ubuntu0.16+esm2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
tomcat8 Ubuntu:Pro:16.04:LTS
- Versions
- 8.0.26-1
- 8.0.28-1
- 8.0.30-1
- 8.0.32-1
- 8.0.32-1ubuntu1
- 8.0.32-1ubuntu1.1
- 8.0.32-1ubuntu1.2
- 8.0.32-1ubuntu1.3
- 8.0.32-1ubuntu1.4
- 8.0.32-1ubuntu1.5
- 8.0.32-1ubuntu1.6
- 8.0.32-1ubuntu1.7
- 8.0.32-1ubuntu1.8
- 8.0.32-1ubuntu1.9
- 8.0.32-1ubuntu1.10
- 8.0.32-1ubuntu1.11
- 8.0.32-1ubuntu1.13
- 8.0.32-1ubuntu1.13+esm1
- 8.0.32-1ubuntu1.13+esm2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
tomcat7 Ubuntu:Pro:16.04:LTS
- Versions
- 7.0.64-1
- 7.0.68-1
- 7.0.68-1ubuntu0.1
- 7.0.68-1ubuntu0.3
- 7.0.68-1ubuntu0.4
- 7.0.68-1ubuntu0.4+esm1
- 7.0.68-1ubuntu0.4+esm2
- 7.0.68-1ubuntu0.4+esm3
- 7.0.68-1ubuntu0.4+esm4
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
tomcat7 Ubuntu:Pro:18.04:LTS
- Versions
- 7.0.78-1
- 7.0.78-1ubuntu0.1~esm1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
tomcat8 Ubuntu:Pro:18.04:LTS
- Versions
- 8.5.21-1ubuntu1
- 8.5.29-1
- 8.5.30-1
- 8.5.30-1ubuntu1
- 8.5.30-1ubuntu1.2
- 8.5.30-1ubuntu1.3
- 8.5.30-1ubuntu1.4
- 8.5.39-1ubuntu1~18.04.1
- 8.5.39-1ubuntu1~18.04.2
- 8.5.39-1ubuntu1~18.04.3
- 8.5.39-1ubuntu1~18.04.3+esm1
- 8.5.39-1ubuntu1~18.04.3+esm2
- 8.5.39-1ubuntu1~18.04.3+esm3
- 8.5.39-1ubuntu1~18.04.3+esm4
- 8.5.39-1ubuntu1~18.04.3+esm5
- 8.5.39-1ubuntu1~18.04.3+esm6
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
tomcat9 Ubuntu:Pro:18.04:LTS
- Versions
- 9.0.16-3~18.04.1
- 9.0.16-3ubuntu0.18.04.1
- 9.0.16-3ubuntu0.18.04.2
- 9.0.16-3ubuntu0.18.04.2+esm1
- 9.0.16-3ubuntu0.18.04.2+esm2
- 9.0.16-3ubuntu0.18.04.2+esm3
- 9.0.16-3ubuntu0.18.04.2+esm4
- 9.0.16-3ubuntu0.18.04.2+esm5
- 9.0.16-3ubuntu0.18.04.2+esm6
- 9.0.16-3ubuntu0.18.04.2+esm7
- 9.0.16-3ubuntu0.18.04.2+esm8
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
Original sources
- https://lists.apache.org/thread.html/r7c6f492fbd39af34a68681dbbba0468490ff1a97a1bd79c6a53610ef%40%3Cannounce.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r856cdd87eda7af40b50278d6de80ee4b42d63adeb433a34a7bdaf9db%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/r75113652e46c4dee687236510649acfb70d2c63e074152049c3f399d%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/rd0774c95699d5aeb5e16e9a600fb2ea296e81175e30a62094e27e3e7%40%3Ccommits.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/r74328b178f9f37fe759dffbc9c1f2793e66d79d7a8a20d3836551794%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/rce2af55f6e144ffcdc025f997eddceb315dfbc0b230e3d750a7f7425%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/rad36ec6a1ffc9e43266b030c22ceeea569243555d34fb4187ff08522%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/rb2fc890bef23cbc7f343900005fe1edd3b091cf18dada455580258f9%40%3Cusers.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r38a5b7943b9a62ecb853acc22ef08ff586a7b3c66e08f949f0396ab1%40%3Cusers.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r17aaa3a05b5b7fe9075613dd0c681efa60a4f8c8fbad152c61371b6e%40%3Cusers.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/rd50baccd1bbb96c2327d5a8caa25a49692b3d68d96915bd1cfbb9f8b%40%3Cusers.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r4afa11e0464408e68f0e9560e90b185749363a66398b1491254f7864%40%3Cusers.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r772335e6851ad33ddb076218fa4ff70de1bf398d5b43e2ddf0130e5d%40%3Cdev.tomcat.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2020/03/msg00006.html
- https://lists.apache.org/thread.html/re5eecbe5bf967439bafeeaa85987b3a43f0e6efe06b6976ee768cde2%40%3Cusers.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r5e2f1201b92ee05a0527cfc076a81ea0c270be299b87895c0ddbe02b%40%3Cusers.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r549b43509e387a42656f0641fa311bf27c127c244fe02007d5b8d6f6%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r61f280a76902b594692f0b24a1dbf647bb5a4c197b9395e9a6796e7c%40%3Cusers.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r4f86cb260196e5cfcbbe782822c225ddcc70f54560f14a8f11c6926f%40%3Cusers.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r9f119d9ce9239114022e13dbfe385b3de7c972f24f05d6dbd35c1a2f%40%3Cusers.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r089dc67c0358a1556dd279c762c74f32d7a254a54836b7ee2d839d8e%40%3Cdev.tomee.apache.org%3E
- https://lists.apache.org/thread.html/rbdb1d2b651a3728f0ceba9e0853575b6f90296a94a71836a15f7364a%40%3Cdev.tomee.apache.org%3E
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00025.html
- https://nvd.nist.gov/vuln/detail/CVE-2020-1938