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Vulnerability · Published Sep 14, 2023 · Assigned by redhat

CVE-2023-1108Undertow: infinite loop in sslconduit during close

High 7.5

In plain English

A high-severity infinite loop in io.undertow:undertow-core. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.8% (higher than 78% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)1.8%top 21.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

A flaw was found in undertow. This issue makes achieving a denial of service possible due to an unexpected handshake status updated in SslConduit, where the loop never terminates.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:14undertow2.3.8-2DEBIAN-CVE-2023-1108
Mavenio.undertow:undertow-core2.3.5.FinalGHSA-m4mm-pg93-fv78
Mavenio.undertow:undertow-core2.2.24.FinalGHSA-m4mm-pg93-fv78
Ubuntu:25.10undertowno fix listedUBUNTU-CVE-2023-1108
Ubuntu:26.04:LTSundertowno fix listedUBUNTU-CVE-2023-1108
Ubuntu:26.10undertowno fix listedUBUNTU-CVE-2023-1108

Affected products (as reported)

VendorProductVersions
io.undertow:undertow-core see references
Red Hat EAP 7.4.10 release see references
Red Hat Red Hat Fuse 7.12 see references
Red Hat Red Hat JBoss Enterprise Application Platform 7.1.0 see references
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 8 see references
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 8 see references
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 8 see references
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 8 see references
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 9 see references
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 9 see references
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 9 see references
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 9 see references
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 on RHEL 7 see references
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 on RHEL 7 see references
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 on RHEL 7 see references
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 on RHEL 7 see references
Red Hat Red Hat Single Sign-On 7 see references
Red Hat Red Hat Single Sign-On 7.6 for RHEL 7 see references
Red Hat Red Hat Single Sign-On 7.6 for RHEL 8 see references
Red Hat Red Hat Single Sign-On 7.6 for RHEL 9 see references
Red Hat Red Hat support for Spring Boot 2.7.13 see references
Red Hat RHEL-8 based Middleware Containers see references
Red Hat RHPAM 7.13.1 async see references
Red Hat Red Hat build of Quarkus see references
Red Hat Red Hat Data Grid 8 see references
Red Hat Red Hat Integration Camel K see references
Red Hat Red Hat Integration Camel Quarkus see references
Red Hat Red Hat Integration Service Registry see references
Red Hat Red Hat JBoss Data Grid 7 see references
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack see references

Weakness: CWE-835 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References