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CVE Record

CVE-2022-31135: Maliciously crafted evidence packet may cause denial of service

Akashi is an open source server implementation of the Attorney Online video game based on the Ace Attorney universe. Affected versions of Akashi are subject to a denial of service attack. An attacker can use a specially crafted evidence packet to make an illegal modification, causing a server crash. This can be used to mount a denial-of-service exploit. Users are advised to upgrade. There is no known workaround for this issue.

MediumCVSS 6.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2022-31135 affects Akashi, an open source Attorney Online game server. A malicious user with low privileges can send a crafted evidence packet that crashes the server, causing denial of service. The impact is availability only; the provided sources do not indicate data theft, integrity compromise, or active exploitation.

Executive priority

Treat this as a service availability risk for affected game servers, not a broad enterprise compromise. Patch during the next maintenance window, sooner for public servers where disruption would affect users.

Technical view

Affected Akashi versions before 1.4 mishandle a specially crafted evidence packet, allowing an illegal modification that crashes the server. The CVSS 3.1 score is 6.5 with network attack vector, low complexity, low privileges required, no user interaction, and high availability impact. The issue is classified as CWE-129.

Likely exposure

Exposure is limited to organizations or communities running AttorneyOnline Akashi server versions earlier than 1.4, especially reachable public game servers. Systems not running Akashi are not implicated by the provided sources.

Exploitation context

The sources support denial-of-service potential through crafted evidence packet handling. They do not report public exploit use, CISA KEV listing, or active exploitation. Exploitation requires low privileges according to CVSS, so access controls may reduce casual abuse but do not remove risk.

Researcher notes

The public record identifies a crafted evidence packet crash condition and CWE-129, but does not provide detailed exploit mechanics in the source bundle. Focus validation on version exposure, crash telemetry, and confirmation that the fixed release is deployed.

Mitigation direction

  • Upgrade Akashi to version 1.4 or later.
  • Prioritize public or community-hosted Akashi servers.
  • Check AttorneyOnline advisory for current vendor guidance.
  • Monitor unexplained server crashes until upgraded.
  • Do not rely on a workaround; none is documented.

Validation and detection

  • Inventory all Akashi server deployments.
  • Confirm running versions are 1.4 or later.
  • Flag any Akashi version earlier than 1.4.
  • Review logs for unexplained crashes or packet-handling errors.
  • Verify upgraded servers report a fixed version.
Prepared
Confidence
high
Sources
4

Public sources used

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-129: 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.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2022-31135 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.5 (3.1)
Known Exploited
No
Published

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

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
3Source 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
6.5CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H2.83.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

6.5Medium
CVSS 3.1 vector shape for CVE-2022-31135Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

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
AttorneyOnlineakashi< 1.4Listed
Weakness

CWE details

CWE-129

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

CWE-129 · source CWE mapping

CWE mapping pending import

This CVE carries a CWE mapping that will resolve to a full Glexia CWE intelligence page after the official CWE import is complete.

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