When a POST request comes through AJP and the request exceeds the max-post-size limit (maxEntitySize), Undertow's AjpServerRequestConduit implementation closes a connection without sending any response to the client/proxy. This behavior results in that a front-end proxy marking the backend worker (application server) as an error state and not forward requests to the worker for a while. In mod_cluster, this continues until the next STATUS request (10 seconds intervals) from the application server updates the server state. So, in the worst case, it can result in "All workers are in error state" and mod_cluster responds "503 Service Unavailable" for a while (up to 10 seconds). In mod_proxy_balancer, it does not forward requests to the worker until the "retry" timeout passes. However, luckily, mod_proxy_balancer has "forcerecovery" setting (On by default; this parameter can force the immediate recovery of all workers without considering the retry parameter of the workers if all workers of a balancer are in error state.). So, unlike mod_cluster, mod_proxy_balancer does not result in responding "503 Service Unavailable". An attacker could use this behavior to send a malicious request and trigger server errors, resulting in DoS (denial of service). This flaw was fixed in Undertow 2.2.19.Final, Undertow 2.3.0.Alpha2.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - When a POST request comes through AJP and the request exceeds the max-post-size limit (maxEntitySize),     Undertow's AjpServerRequestConduit implementation closes a connection without sending any response to the     client/proxy. This behavior results in that a front-end proxy marking the backend worker (application     server) as an error state and not forward requests to the worker for a while. In mod_cluster, this     continues until the next STATUS request (10 seconds intervals) from the application server updates the     server state. So, in the worst case, it can result in All workers are in error state and mod_cluster     responds 503 Service Unavailable for a while (up to 10 seconds). In mod_proxy_balancer, it does not     forward requests to the worker until the retry timeout passes. However, luckily, mod_proxy_balancer has     forcerecovery setting (On by default; this parameter can force the immediate recovery of all workers     without considering the retry parameter of the workers if all workers of a balancer are in error state.).
    So, unlike mod_cluster, mod_proxy_balancer does not result in responding 503 Service Unavailable. An     attacker could use this behavior to send a malicious request and trigger server errors, resulting in DoS     (denial of service). This flaw was fixed in Undertow 2.2.19.Final, Undertow 2.3.0.Alpha2. (CVE-2022-2053)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2025:9583 advisory.

    Red Hat JBoss Enterprise Application Platform 7 is a platform for Java applications based on the WildFly     application runtime. This release of Red Hat JBoss Enterprise Application Platform 7.3.14 serves as a     replacement for Red Hat JBoss Enterprise Application Platform 7.3.13, and includes bug fixes and     enhancements. See the Red Hat JBoss Enterprise Application Platform 7.3.14 Release Notes for information     about the most significant bug fixes and enhancements included in this release.

    Security Fix(es):

    * undertow: unrestricted request storage leads to memory exhaustion [eap-7.3.z] (CVE-2023-1973)

    * undertow: Infinite loop in SslConduit during close [eap-7.3.z] (CVE-2023-1108)

    * undertow: OutOfMemoryError due to @MultipartConfig handling [eap-7.3.z] (CVE-2023-3223)

    * undertow: Out-of-memory Error after several closed connections with wildfly-http-client protocol     [eap-7.3.z] (CVE-2024-1635)

    * keycloak: org.keycloak.protocol.oidc: unvalidated cross-origin messages in checkLoginIframe leads to     DDoS [eap-7.3.z] (CVE-2024-1249)

    * undertow: Server identity in https connection is not checked by the undertow client [eap-7.3.z]     (CVE-2022-4492)

    * undertow: potential security issue in flow control over HTTP/2 may lead to DOS(incomplete fix for     CVE-2021-3629) [eap-7.3.z] (CVE-2022-1259)

    * undertow: Large AJP request may cause DoS [eap-7.3.z] (CVE-2022-2053)

    * undertow: AJP Request closes connection exceeding maxRequestSize [eap-7.3.z] (CVE-2023-5379)

    * undertow: Double AJP response for 400 from EAP 7 results in CPING failures [eap-7.3.z] (CVE-2022-1319)

    * eap: JBoss EAP: wildfly-elytron has a SSRF security issue [eap-7.3.z] (CVE-2024-1233)

    * wildfly-elytron: possible timing attacks via use of unsafe comparator [eap-7.3.z] (CVE-2022-3143)

    * netty-all: netty-codec: SnappyFrameDecoder doesn't restrict chunk length and may buffer skippable chunks     in an unnecessary way [eap-7.3.z] (CVE-2021-37137)

    * netty-all: netty-codec: Bzip2Decoder doesn't allow setting size restrictions for decompressed data     [eap-7.3.z] (CVE-2021-37136)

    * jackson-databind: denial of service via a large depth of nested objects [eap-7.3.z] (CVE-2020-36518)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgements, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2025:4226 advisory.

    Red Hat JBoss Enterprise Application Platform 7 is a platform for Java applications based on the WildFly     application runtime. This release of Red Hat JBoss Enterprise Application Platform 7.1.10 serves as a     replacement for Red Hat JBoss Enterprise Application Platform 7.1.9, and includes bug fixes and     enhancements. See the Red Hat JBoss Enterprise Application Platform 7.1.9 Release Notes for information     about the most significant bug fixes and enhancements included in this release.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - When a POST request comes through AJP and the request exceeds the max-post-size limit (maxEntitySize),
    Undertow's AjpServerRequestConduit implementation closes a connection without sending any response to the
    client/proxy. This behavior results in that a front-end proxy marking the backend worker (application
    server) as an error state and not forward requests to the worker for a while. In mod_cluster, this
    continues until the next STATUS request (10 seconds intervals) from the application server updates the
    server state. So, in the worst case, it can result in "All workers are in error state" and mod_cluster
    responds "503 Service Unavailable" for a while (up to 10 seconds). In mod_proxy_balancer, it does not
    forward requests to the worker until the "retry" timeout passes. However, luckily, mod_proxy_balancer has
    "forcerecovery" setting (On by default; this parameter can force the immediate recovery of all workers
    without considering the retry parameter of the workers if all workers of a balancer are in error state.).
    So, unlike mod_cluster, mod_proxy_balancer does not result in responding "503 Service Unavailable". An
    attacker could use this behavior to send a malicious request and trigger server errors, resulting in DoS
    (denial of service). This flaw was fixed in Undertow 2.2.19.Final, Undertow 2.3.0.Alpha2. (CVE-2022-2053)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2022:6823 advisory.

    Red Hat JBoss Enterprise Application Platform 7 is a platform for Java applications based on the WildFly     application runtime. This release of Red Hat JBoss Enterprise Application Platform 7.4.7 serves as a     replacement for Red Hat JBoss Enterprise Application Platform 7.4.6, and includes bug fixes and     enhancements. See the Red Hat JBoss Enterprise Application Platform 7.4.7 Release Notes for information     about the most significant bug fixes and enhancements included in this release.

    Security Fix(es):

    * undertow: Large AJP request may cause DoS (CVE-2022-2053)

    * undertow: potential security issue in flow control over HTTP/2 may lead to DOS. Incomplete fix for     CVE-2021-3629 (CVE-2022-1259)

    * snakeyaml: Denial of Service due missing to nested depth limitation for collections. (CVE-2022-25857)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2022:6822 advisory.

    Red Hat JBoss Enterprise Application Platform 7 is a platform for Java applications based on the WildFly     application runtime. This release of Red Hat JBoss Enterprise Application Platform 7.4.7 serves as a     replacement for Red Hat JBoss Enterprise Application Platform 7.4.6, and includes bug fixes and     enhancements. See the Red Hat JBoss Enterprise Application Platform 7.4.7 Release Notes for information     about the most significant bug fixes and enhancements included in this release.

    Security Fix(es):

    * undertow: Large AJP request may cause DoS (CVE-2022-2053)

    * undertow: potential security issue in flow control over HTTP/2 may lead to DOS. Incomplete fix for     CVE-2021-3629 (CVE-2022-1259)

    * snakeyaml: Denial of Service due missing to nested depth limitation for collections. (CVE-2022-25857)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2022:6821 advisory.

    Red Hat JBoss Enterprise Application Platform 7 is a platform for Java applications based on the WildFly     application runtime. This release of Red Hat JBoss Enterprise Application Platform 7.4.7 serves as a     replacement for Red Hat JBoss Enterprise Application Platform 7.4.6, and includes bug fixes and     enhancements. See the Red Hat JBoss Enterprise Application Platform 7.4.7 Release Notes for information     about the most significant bug fixes and enhancements included in this release.

    Security Fix(es):

    * undertow: Large AJP request may cause DoS (CVE-2022-2053)

    * undertow: potential security issue in flow control over HTTP/2 may lead to DOS. Incomplete fix for     CVE-2021-3629 (CVE-2022-1259)

    * snakeyaml: Denial of Service due missing to nested depth limitation for collections. (CVE-2022-25857)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
252486	Linux Distros Unpatched Vulnerability : CVE-2022-2053	Nessus	Misc.	high
240509	RHEL 7 : Red Hat JBoss Enterprise Application Platform 7.3.14 Security update (Important) (RHSA-2025:9583)	Nessus	Red Hat Local Security Checks	high
237013	RHEL 7 : Red Hat JBoss Enterprise Application Platform 7.1.10 on RHEL 7 (RHSA-2025:4226)	Nessus	Red Hat Local Security Checks	high
413060	SCA: security update for io.undertow:undertow-core (GHSA-95rf-557x-44g5)	Tenable Cloud Security	SCA Checks	high
413060	SCA: security update for io.undertow:undertow-core (GHSA-95rf-557x-44g5)	Tenable Self-Hosted Container Security	SCA Checks	high
165981	RHEL 9 : Red Hat JBoss Enterprise Application Platform 7.4.7 Security update (Important) (RHSA-2022:6823)	Nessus	Red Hat Local Security Checks	high
165980	RHEL 8 : Red Hat JBoss Enterprise Application Platform 7.4.7 Security update (Important) (RHSA-2022:6822)	Nessus	Red Hat Local Security Checks	high
165959	RHEL 7 : Red Hat JBoss Enterprise Application Platform 7.4.7 Security update (Important) (RHSA-2022:6821)	Nessus	Red Hat Local Security Checks	high

Detections

Analytics

CVE-2022-2053

high

Tenable Plugins

high

high

high

high

high

high

high

high