Io.undertow/undertow: undertow: http response header integrity issue due to character truncation
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: yes
- Technical impact: partial
Summary
A flaw was found in Undertow, an HTTP server, within its HTTP response header writing path. The `writeString()` method performs a silent narrowing cast from 16-bit Unicode characters to 8-bit bytes when writing HTTP response header values. A remote attacker can exploit this by supplying specific Unicode characters in user-controlled input that an application places into response headers. This can lead to the truncation of these characters into ASCII control characters or special symbols, potentially resulting in limited integrity impact or information disclosure if the application does not properly sanitize user input.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: partial
- Record last updated
Affected versions
- undertow-core
Version range not reported
- undertow-parent
Version range not reported
- undertow-servlet
Version range not reported
- undertow-websockets-jsr
Version range not reported
- moditect
Version range not reported
- pki-core:10.6/resteasy
Version range not reported
- pki-deps:10.6/resteasy
Version range not reported
- resteasy
Version range not reported
- jboss-eap-7/eap74-els-openjdk11-openshift-rhel8
Version range not reported
- jboss-eap-7/eap74-els-openjdk17-openshift-rhel8
Version range not reported
- jboss-eap-7/eap74-els-openjdk8-openshift-rhel8
Version range not reported
- undertow-core
Version range not reported
- undertow-parent
Version range not reported
- undertow-servlet
Version range not reported
- undertow-websockets-jsr
Version range not reported
- undertow-core
Version range not reported
- undertow-servlet
Version range not reported
- undertow-websockets-jsr
Version range not reported
- undertow-core
Version range not reported
- undertow-servlet
Version range not reported
- undertow-websockets-jsr
Version range not reported
- undertow-core
Version range not reported
- undertow-servlet
Version range not reported
- undertow-websockets-jsr
Version range not reported