Vulnerability in Gofiber Fiber
CVE-2020-15111
In Fiber before version 1.12.6, the filename that is given in c.Attachment() (https://docs.gofiber.io/ctx#attachment) is not escaped, and therefore vulnerable for a CRLF injection attack. I.e. an attacker could upload a custom filename and then give the link to the victim. With this filename, the attacker can change the name of the downloaded file, redirect to another site, change the authorization header, etc. A possible workaround is to serialize the input before passing it to ctx.Attachment().
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.009 (56.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 56.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Gofiber Fiber — versions < 1.12.6
Weakness classification (CWE)
References
- github.com/gofiber/fiber/security/advisories/GHSA-9cx9-x2gp-9qvh (Third Party Advisory)
- github.com/gofiber/fiber/pull/579/commits/f698b5d5066cfe594102ae252cd58a1fe57cf… (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-15111?
- CVE-2020-15111 is a medium-severity vulnerability in Gofiber Fiber, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 4.2/10. Published 2020-07-20.
- How severe is CVE-2020-15111?
- Medium severity. CVSS v3 base score is 4.2 out of 10.