Vulnerability in Red Hat, Inc. Undertow
CVE-2017-7559
In Undertow 2.x before 2.0.0.Alpha2, 1.4.x before 1.4.17.Final, and 1.3.x before 1.3.31.Final, it was found that the fix for CVE-2017-2666 was incomplete and invalid characters are still allowed in the query string and path parameters. This could be exploited, in conjunction with a proxy that also permitted the invalid characters but with a different interpretation, to inject data into the HTTP response. By manipulating the HTTP response the attacker could poison a web-cache, perform an XSS attack, or obtain sensitive information from requests other than their own.
Vulnerability class: HTTP Request Smuggling
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.017 (75.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 75.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000
Affected products
- Red Hat, Inc. Undertow — versions 1.3.x before 1.3.31.Final, 1.4.x before 1.4.17.Final, 2.x before 2.0.0.Alpha2
- Red Hat Undertow — versions 2.0.0
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2018:1322 (vendor-advisory, Vendor Advisory)
- bugzilla.redhat.com/show_bug.cgi (Issue Tracking, Vendor Advisory)
- access.redhat.com/errata/RHSA-2018:0002 (vendor-advisory, Vendor Advisory)
- access.redhat.com/errata/RHSA-2017:3458 (vendor-advisory, Vendor Advisory)
- issues.jboss.org/browse/UNDERTOW-1251 (Issue Tracking, Vendor Advisory)
- access.redhat.com/errata/RHSA-2018:0004 (vendor-advisory, Vendor Advisory)
- access.redhat.com/errata/RHSA-2017:3455 (vendor-advisory, Vendor Advisory)
- access.redhat.com/errata/RHSA-2017:3456 (vendor-advisory, Vendor Advisory)
- access.redhat.com/errata/RHSA-2018:0003 (vendor-advisory, Vendor Advisory)
- access.redhat.com/errata/RHSA-2018:0005 (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2017-7559?
- CVE-2017-7559 is a medium-severity vulnerability in Red Hat, Inc. Undertow, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 6.1/10. Published 2018-01-10.
- How severe is CVE-2017-7559?
- Medium severity. CVSS v3 base score is 6.1 out of 10.