Vulnerability Name:

CVE-2022-2053 (CCN-232910)

Assigned:2022-08-02
Published:2022-08-02
Updated:2022-08-11
Summary: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.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-400
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2022-2053

Source: CCN
Type: Red Hat Bugzilla - Bug 2095862
(CVE-2022-2053) - CVE-2022-2053 undertow: Large AJP request may cause DoS

Source: MISC
Type: Issue Tracking, Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2095862&comment#0

Source: XF
Type: UNKNOWN
undertow-cve20222053-dos(232910)

Source: CCN
Type: Undertow GIT Repository
[UNDERTOW-2133] CVE-2022-2053 Handle RequestTooBigException #1350

Source: MISC
Type: Vendor Advisory
https://issues.redhat.com/browse/UNDERTOW-2133

Vulnerable Configuration:Configuration 1:
  • cpe:/a:redhat:jboss_fuse:7.0.0:*:*:*:*:*:*:*
  • OR cpe:/a:redhat:integration_camel_k:-:*:*:*:*:*:*:*
  • OR cpe:/a:redhat:undertow:*:*:*:*:*:*:*:* (Version < 2.2.19)
  • OR cpe:/a:redhat:undertow:2.3.0:alpha1:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    redhat jboss fuse 7.0.0
    redhat integration camel k -
    redhat undertow *
    redhat undertow 2.3.0 alpha1