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CVE Record

CVE-2023-6681: Jwcrypto: denail of service via specifically crafted jwe

A vulnerability was found in JWCrypto. This flaw allows an attacker to cause a denial of service (DoS) attack and possible password brute-force and dictionary attacks to be more resource-intensive. This issue can result in a large amount of computational consumption, causing a denial of service attack.

MediumCVSS 5.3Not KEV-listedUpdated
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2023-6681 is a denial-of-service issue in JWCrypto handling of specially crafted JWE input. An unauthenticated network attacker could force affected systems to spend excessive computation, reducing availability. The public bundle does not show data theft or integrity impact.

Executive priority

Treat this as a moderate availability risk. Patch during normal vulnerability remediation cycles, faster for exposed authentication or identity services. It does not currently justify emergency response unless critical services process untrusted JWE input.

Technical view

The flaw is categorized as CWE-400, uncontrolled resource consumption. CVSS 3.1 is 5.3 with network access, low attack complexity, no privileges, and availability impact only. Red Hat lists affected RHEL 8 IdM module packages and RHEL 9 python-jwcrypto.

Likely exposure

Exposure is most likely where affected Red Hat systems process untrusted JWE data through JWCrypto, especially identity or authentication-related services. Red Hat Ansible Automation Platform 2 automation-controller is listed as unaffected; RHEL 7 python-jwcrypto status is unknown in the bundle.

Exploitation context

The provided sources do not state active exploitation, and KEV is false. The described impact is resource exhaustion from crafted JWE input, not code execution or privilege escalation. Public evidence in the bundle is limited to vendor advisories, CVE records, and issue tracking.

Researcher notes

Key gaps: the bundle does not provide exploit telemetry, fixed package versions, or detailed parser behavior. Avoid assuming all JWCrypto deployments are reachable. Validate exposure by package presence plus application data flow, not package inventory alone.

Mitigation direction

  • Apply Red Hat updates from RHSA-2024:3267 and RHSA-2024:9281 where applicable.
  • Prioritize internet-facing services that parse JWE data with JWCrypto.
  • Check Red Hat CVE guidance for RHEL 7 because status is unknown.
  • Confirm Ansible Automation Platform 2 automation-controller is not treated as affected.
  • Monitor vendor advisories for any additional upstream JWCrypto remediation guidance.

Validation and detection

  • Inventory RHEL 8 IdM module and RHEL 9 python-jwcrypto installations.
  • Compare installed packages against Red Hat advisory applicability.
  • Identify applications accepting untrusted JWE input on affected hosts.
  • Review availability monitoring for unexplained CPU spikes or service degradation.
  • Document unaffected and unknown assets separately for follow-up.
Prepared
Confidence
high
Sources
6

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · low confidence lookup

CWE-400: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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description · low confidence lookup

Credential and access behavior lookup

The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2023-6681 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.3 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
5Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
5.3CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L3.91.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

5.3Medium
CVSS 3.1 vector shape for CVE-2023-6681Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Red HatRed Hat Enterprise Linux 8idm:client, 8100020240417004735.143e9e98affected
Red HatRed Hat Enterprise Linux 8idm:DL1, 8100020240416171943.823393f5affected
Red HatRed Hat Enterprise Linux 9python-jwcrypto, 0:1.5.6-2.el9affected
Red HatRed Hat Ansible Automation Platform 2automation-controllerunaffected
Red HatRed Hat Enterprise Linux 7python-jwcryptounknown
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-400 · source CWE mapping

Uncontrolled Resource Consumption

Uncontrolled Resource Consumption represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.