Auth bypass in Travis-Ci Travis Ci
CVE-2021-41077
The activation process in Travis CI, for certain 2021-09-03 through 2021-09-10 builds, causes secret data to have unexpected sharing that is not specified by the customer-controlled .travis.yml file. In particular, the desired behavior (if .travis.yml has been created locally by a customer, and added to git) is for a Travis service to perform builds in a way that prevents public access to customer-specific secret environment data such as signing keys, access credentials, and API tokens. However, during the stated 8-day interval, secret data could be revealed to an unauthorized actor who forked a public repository and printed files during a build process.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.015 (73.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 73.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
Weakness classification (CWE)
References
- twitter.com/peter_szilagyi/status/1437646118700175360 (Third Party Advisory)
- twitter.com/peter_szilagyi/status/1437649838477283330 (Third Party Advisory)
- blog.travis-ci.com/2021-09-13-bulletin (Vendor Advisory)
- news.ycombinator.com/item (Third Party Advisory)
- travis-ci.community/t/security-bulletin/12081 (Vendor Advisory)
- news.ycombinator.com/item (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-41077?
- CVE-2021-41077 is a high-severity vulnerability in Travis-Ci Travis Ci, classified under Missing Authorization. CVSS score: 7.5/10. Published 2021-09-14.
- How severe is CVE-2021-41077?
- High severity. CVSS v3 base score is 7.5 out of 10.