HTTP Request Smuggling in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2020-11506
Published: April 23, 2020
Vulnerability identifier: #VU27260
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-11506
CWE-ID: CWE-444
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: GitLab, Inc
Affected software:
Gitlab Community Edition
GitLab Enterprise Edition
Gitlab Community Edition
GitLab Enterprise Edition
Detailed vulnerability description
The vulnerability allows a remote attacker to perform HTTP request smuggling attack.
The vulnerability exists due to a particular header can be used to override restrictions and results in GitLab Workhorse disclosing job artifact uploads and files in the "/tmp" directory. A remote attacker can send a specially crafted HTTP request to the application, perform a request smuggling attack and gain access to sensitive information on the target system.
How to mitigate CVE-2020-11506
Install updates from vendor's website.