Vulnerability in Red Hat Enterprise Linux
CVE-2020-10687
A flaw was discovered in all versions of Undertow before Undertow 2.2.0.Final, where HTTP request smuggling related to CVE-2017-2666 is possible against HTTP/1.x and HTTP/2 due to permitting invalid characters in an HTTP request. This flaw allows an attacker to poison a web-cache, perform an XSS attack, or obtain sensitive information from request other than their own.
Vulnerability class: HTTP Request Smuggling
EPSS: 0.011 (63.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.
Affected products
- Redhat Enterprise_linux — versions 6.0, 7.0, 8.0
- Redhat Jboss_enterprise_application_platform — versions 7.2, 7.3, 7.4
- Redhat Single_sign-on
- Redhat Undertow
- N/a Undertow — versions Undertow 2.2.0.Final
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (x_refsource_MISC, Issue Tracking, Vendor Advisory)
- secalert@redhat.com (mailing-list, x_refsource_MLIST)
- secalert@redhat.com (x_refsource_CONFIRM, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-10687?
- CVE-2020-10687 is a medium-severity vulnerability in Red Hat Enterprise Linux, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 4.8/10. Published 2020-09-23.
- How severe is CVE-2020-10687?
- Medium severity. CVSS v3 base score is 4.8 out of 10.
- Is CVE-2020-10687 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.