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CVE-2017-2666
It was discovered in Undertow that the code that parsed the HTTP request line permitted invalid characters. This could be exploited, in…
Medium6.5EPSS 3.1%
- Published
- Updated
- Reserved
- Assigned by
- redhat
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.0 | Medium6.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
| NVDNVD · Modified | 3.0 | Medium6.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 3.1% · top 12% of all CVEs (4 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.
Weakness
Affected products
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavenio.undertow:undertow-coreGHSA-mcfm-h73v-635m (opens in a new tab)
References (11)
- RHSA-2017:1411 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2017:1409 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2666 (opens in a new tab)x_refsource_CONFIRMx_transferred
- DSA-3906 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- RHSA-2017:3458 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2017:1410 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2017:1412 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2017:3455 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2017:3456 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- 98966 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- RHSA-2017:3454 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-mcfm-h73v-635m (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2017-2666)Record last updated .