Vulnerability in Apache Beam
CVE-2020-27216
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.044 (91.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 91.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.044 · newest: 0.044 · change: 0.000
Affected products
- Apache Beam — versions 2.21.0, 2.22.0, 2.23.0
- Eclipse Jetty — versions 10.0.0, 11.0.0
- NetApp Snapcenter
- NetApp Snap Creator Framework
- NetApp Storage Replication Adapter
- NetApp Vasa Provider
- NetApp Virtual Storage Console
- Oracle Communications Application Session Controller — versions 3.9m0p2
- Oracle Communications Converged Application Server - Service Controller — versions 6.2
- Oracle Communications Element Manager
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugs.eclipse.org/bugs/show_bug.cgi (Exploit, Patch, Vendor Advisory)
- github.com/eclipse/jetty.project/security/advisories/GHSA-g3wg-6mcf-8jj6 (Exploit, Third Party Advisory, Mitigation)
- lists.apache.org/thread.html/re08b03cd1754b32f342664eead415af48092c630c8e3e0deb… (mailing-list)
- lists.apache.org/thread.html/r0e9efe032cc65433251ee6470c66c334d4e7db9101e24cf91… (mailing-list)
- lists.apache.org/thread.html/r5494fdaf4a0a42a15c49841ba7ae577d466d09239ee105045… (mailing-list)
- lists.apache.org/thread.html/ra55e04d5a73afcb8383f4386e2b26832c6e3972e53827021a… (mailing-list)
- lists.apache.org/thread.html/rd58b60ab2e49ebf21022e59e280feb25899ff785c88f31fe3… (mailing-list)
- lists.apache.org/thread.html/r93d5e81e879120d8d87925dbdd4045cb3afa9b066f4370f60… (mailing-list)
- lists.apache.org/thread.html/r59e0878013d329dcc481eeafebdb0ee445b1e2852d0c4827b… (mailing-list)
- lists.apache.org/thread.html/raf9c581b793c30ff8f55f2415c7bd337eb69775aae607bf9e… (mailing-list)
Frequently asked questions
- What is CVE-2020-27216?
- CVE-2020-27216 is a high-severity vulnerability in Apache Beam, classified under Creation of Temporary File With Insecure Permissions. CVSS score: 7.0/10. Published 2020-10-23.
- How severe is CVE-2020-27216?
- High severity. CVSS v3 base score is 7.0 out of 10.
- Is CVE-2020-27216 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.