CVE-2017-2666

moderate-risk
Published 2018-07-27

It was discovered in Undertow that the code that parsed the HTTP request line permitted invalid characters. 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.

Do I need to act?

~
1.4% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.5/10 Medium
NETWORK / LOW complexity

Affected Products (5)

Affected Vendors

Debian Redhat

References (22)

Vendor Advisory http://rhn.redhat.com/errata/RHSA-2017-1409.html
Third Party Advisory http://www.securityfocus.com/bid/98966
Vendor Advisory https://access.redhat.com/errata/RHSA-2017:1410
Vendor Advisory https://access.redhat.com/errata/RHSA-2017:1411
Vendor Advisory https://access.redhat.com/errata/RHSA-2017:1412
Vendor Advisory https://access.redhat.com/errata/RHSA-2017:3454
Vendor Advisory https://access.redhat.com/errata/RHSA-2017:3455
Vendor Advisory https://access.redhat.com/errata/RHSA-2017:3456
Vendor Advisory https://access.redhat.com/errata/RHSA-2017:3458
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2666
Third Party Advisory https://www.debian.org/security/2017/dsa-3906
Vendor Advisory http://rhn.redhat.com/errata/RHSA-2017-1409.html
Third Party Advisory http://www.securityfocus.com/bid/98966
Vendor Advisory https://access.redhat.com/errata/RHSA-2017:1410
Vendor Advisory https://access.redhat.com/errata/RHSA-2017:1411
Vendor Advisory https://access.redhat.com/errata/RHSA-2017:1412
Vendor Advisory https://access.redhat.com/errata/RHSA-2017:3454
Vendor Advisory https://access.redhat.com/errata/RHSA-2017:3455
Vendor Advisory https://access.redhat.com/errata/RHSA-2017:3456
Vendor Advisory https://access.redhat.com/errata/RHSA-2017:3458
and 2 more references
40
/ 100
moderate-risk
Severity 24/34 · High
Exploitability 4/34 · Minimal
Exposure 12/34 · Low