Path Traversal in Mozilla Firefox
CVE-2020-12392
The 'Copy as cURL' feature of Devtools' network tab did not properly escape the HTTP POST data of a request, which can be controlled by the website. If a user used the 'Copy as cURL' feature and pasted the command into a terminal, it could have resulted in the disclosure of local files. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (25.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 25.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified
- Mozilla Firefox Esr
- Mozilla Thunderbird — versions unspecified
- Canonical Ubuntu Linux — versions 16.04, 18.04, 19.10
Weakness classification (CWE)
References
- www.mozilla.org/security/advisories/mfsa2020-18/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2020-16/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2020-17/ (Vendor Advisory)
- bugzilla.mozilla.org/show_bug.cgi (Permissions Required, Issue Tracking)
- usn.ubuntu.com/4373-1/ (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/202005-03 (Third Party Advisory)
- security.gentoo.org/glsa/202005-04 (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-12392?
- CVE-2020-12392 is a medium-severity vulnerability in Mozilla Firefox, classified under Path Traversal. CVSS score: 5.5/10. Published 2020-05-26.
- How severe is CVE-2020-12392?
- Medium severity. CVSS v3 base score is 5.5 out of 10.