CVE-2017-2666
A public proof of concept exists; no exploitation attested.
- Published2018-07-27
- WeaknessCWE-444
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
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.
Timeline
dates in UTC- 2018-07-2714:29CVE publishedNVD
- 2026-10-2319:23First public proof of conceptPoC-in-GitHub
Versions per branch
NVD · OSV| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 9.0 | = 9.0 | no fix published | NVD |
| 10.0 | = 10.0 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 7.0 | = 7.0.0 | no fix published | NVD |
| 7.1 | = 7.1.0 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 1.4 | ≥ 1.4.0, < 1.4.17 | 1.4.17 | OSV |
| 1.3 | < 1.3.31 | 1.3.31 | OSV |
1 more product in the sources.
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Packages
- eap7-activemq-artemisRed Hat:jboss_enterprise_application_platform:7.1::el7all versions · fixed in 0:1.5.5.008-1.redhat_1.1.ep7.el7and 15 other packages
- eap7-activemq-artemisRed Hat:jboss_enterprise_application_platform:7::el7all versions · fixed in 0:1.1.0-17.SP20_redhat_1.1.ep7.el7and 14 other packages
- eap7-activemq-artemisRed Hat:jboss_enterprise_application_platform:7::el6all versions · fixed in 0:1.1.0-17.SP20_redhat_1.1.ep7.el6and 14 other packages
- eap7-activemq-artemisRed Hat:jboss_enterprise_application_platform:7::el6all versions · fixed in 0:1.5.5.008-1.redhat_1.1.ep7.el6and 15 other packages
- eap7-antlrRed Hat:jboss_enterprise_application_platform:7.1::el7all versions · fixed in 0:2.7.7-35.redhat_7.1.ep7.el7
- eap7-antlrRed Hat:jboss_enterprise_application_platform:7::el6all versions · fixed in 0:2.7.7-35.redhat_7.1.ep7.el6
- eap7-apache-commons-beanutilsRed Hat:jboss_enterprise_application_platform:7.1::el7all versions · fixed in 0:1.9.3-1.redhat_1.1.ep7.el7
- eap7-apache-commons-beanutilsRed Hat:jboss_enterprise_application_platform:7::el6all versions · fixed in 0:1.9.3-1.redhat_1.1.ep7.el6
303 more package ranges on OSV.dev
Vendor advisories
Red Hat Security Advisory: eap7-jboss-ec2-eap security update
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.1.0 security update
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.1.0 security update
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.1.0 security update
Red Hat Security Advisory: eap7-jboss-ec2-eap security update
Red Hat Security Advisory: JBoss Enterprise Application Platform 7.0.6 on Red Hat Enterprise Linux 6
2 more advisories
Fix
- Vendor fix Red Hat Product Security RHSA-2017:3458 · 6 productsBefore applying this update, back up your existing Red Hat JBoss Enterprise Application Platform installation and deployed applications. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
- Vendor fix Red Hat Product Security RHSA-2017:3455 · 418 productsBefore applying this update, back up your existing Red Hat JBoss Enterprise Application Platform installation and deployed applications. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 For the upda…
- Vendor fix Red Hat Product Security RHSA-2017:3456 · 1 productBefore applying this update, back up your existing Red Hat JBoss Enterprise Application Platform installation and deployed applications. The References section of this erratum contains a download link (you must log in to download the update).
Advisories and patches
- rhn.redhat.comVendor Advisory
- access.redhat.comVendor Advisory
- access.redhat.comVendor Advisory
- access.redhat.comVendor Advisory
- access.redhat.comVendor Advisory
- access.redhat.comVendor Advisory
Detection
read 2026-11-01 01:02 UTC- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof of concept
- PoC-in-GitHub1 repository, unverifiedknown since 2026-11-01tafamace/CVE-2017-2666
- Metasploit modules
- none listed Metasploit Framework
Sources
- CNACVSS 3.06.5known since 2026-10-23
- NVDCVSS 3.06.5read 2026-10-23
- NVDCVSS 2.06.4read 2026-10-23
- CNAweakness (CWE)CWE-444known since 2026-10-23
- NVDweakness (CWE)CWE-444read 2026-10-23
- FIRST EPSSEPSS score3.1 %2026-11-08
- PoC-in-GitHubproof of concept1known since 2026-11-01
- OSVaffected packages—
- GitHub AdvisoriesadvisoryMODERATE2020-06-16
Identifiers
- EUVD-2018-0639same flawENISA EUVD · LicenseRef-ENISA-legal-notice
- GHSA-mcfm-h73v-635msame flawGitHub Advisory Database · CC-BY-4.0
- DSA-3906-1advisory covering several CVEsDebian · LicenseRef-unstated
- RHSA-2017:1410advisory covering several CVEsRed Hat · CC-BY-4.0
- RHSA-2017:1411advisory covering several CVEsRed Hat · CC-BY-4.0
- RHSA-2017:1412advisory covering several CVEsRed Hat · CC-BY-4.0
- RHSA-2017:3454advisory covering several CVEsRed Hat · CC-BY-4.0
- RHSA-2017:3455advisory covering several CVEsRed Hat · CC-BY-4.0
- RHSA-2017:3458advisory covering several CVEsRed Hat · CC-BY-4.0
Technical details
- CVSS v3 Vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- Published
- 2018-07-27
- Last Modified
- 2026-06-17
- NVD status
- Modified
- GitHub Advisory
- GHSA-mcfm-h73v-635m
Frequently asked questions
What is CVE-2017-2666?
Is CVE-2017-2666 actively exploited?
What is the CVSS score for CVE-2017-2666?
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.
Sources for this record
- CVE Program · CVE Program Terms of Use
- ENISA EU Vulnerability Database · ENISA legal notice §1.2 (reproduction authorised, provided the source is acknowledged)
- FIRST EPSS · EPSS terms of use (free use, attribution requested)
- GitHub Advisory Database · CC-BY-4.0 · GHSA-mcfm-h73v-635m
- NVD · Public domain (17 U.S.C. § 105) for NVD-authored data; third-party content under its own terms
- OSV.dev · Per record, as its publisher states it: each row carries the label in sourceLicense when one is served
- PoC-in-GitHub · CC0-1.0
- Red Hat Product Security (CSAF and VEX) · CC-BY-4.0