CVE-2020-27216 Information
Share on:Description
In Eclipse Jetty versions 1.0 thru 9.4.32.v20200930 10.0.0.alpha1 thru 10.0.0.beta2 and 11.0.0.alpha1 thru 11.0.0.beta2O on Unix like systems the system’s temporary directory is shared between all users on that system. A collocated user can observe the process of creating a temporary sub directory in the shared temporary directory and race to complete the creation of the temporary subdirectory. If the attacker wins the race then they will have read and write permission to the subdirectory used to unpack web applications including their WEB-INF/lib jar files and JSP files. If any code is ever executed out of this temporary directory this can lead to a local privilege escalation vulnerability.
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Reference
https://bugs.eclipse.org/bugs/show_bug.cgi?id=567921 https://github.com/eclipse/jetty.project/security/advisories/GHSA-g3wg-6mcf-8jj6advisory-comment-63053 https://lists.apache.org/thread.html/r0e9efe032cc65433251ee6470c66c334d4e7db9101e24cf91a3961f2@3Ccommits.directory.apache.org3E https://lists.apache.org/thread.html/r5494fdaf4a0a42a15c49841ba7ae577d466d09239ee1050458da0f29@3Cjira.kafka.apache.org3E https://lists.apache.org/thread.html/r59e0878013d329dcc481eeafebdb0ee445b1e2852d0c4827b1ddaff2@3Cissues.beam.apache.org3E https://lists.apache.org/thread.html/r93d5e81e879120d8d87925dbdd4045cb3afa9b066f4370f60b626ce3@3Ccommits.druid.apache.org3E https://lists.apache.org/thread.html/ra55e04d5a73afcb8383f4386e2b26832c6e3972e53827021ab885943@3Ccommits.shiro.apache.org3E https://lists.apache.org/thread.html/rd58b60ab2e49ebf21022e59e280feb25899ff785c88f31fe314aa5b9@3Ccommits.shiro.apache.org3E https://lists.apache.org/thread.html/re08b03cd1754b32f342664eead415af48092c630c8e3e0deba862a26@3Ccommits.shiro.apache.org3E
Attack Complexity
LOW
Privileges Required
LOW
User Interaction Required
LOW
Scope
NONE
Confidentiality Impact
UNCHANGED
Integrity Impact
HIGH
Availability Impact
HIGH
Base Score
HIGH
Base Severity
7.8