CVE-2023-3433Public exploit

Local service deadlock via unsanitized nickname

Published Jul 14, 2023 · Updated Oct 22, 2024

Improper input validation in Savoir-faire Linux Jami 20222284 allows local users to deadlock the Windows client via a crafted nickname. The profile-management nickname field accepts angle-bracketed text without full sanitization, so signature creation cannot complete and the client deadlocks. Editing the local account's nickname is required; the deadlock prevents that account from sending or receiving messages.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Savoir-faire Linux Jami 20222284 allows local users to deadlock the Windows client via a crafted nickname. The profile-management nickname field accepts angle-bracketed text without full sanitization, so signature creation cannot complete and the client deadlocks. Editing the local account's nickname is required; the deadlock prevents that account from sending or receiving messages.

The record

CVE
CVE-2023-3433
Published
Jul 14, 2023
Updated
Oct 22, 2024
Vendor
Savoir-faire Linux
Product
Jami
Classifications
CWE-20, CAPEC-25, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 14, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 22, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=20222284

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Savoir-faire Linux · Jamiversion=20222284

Published CVSS scores

5.5Black Lantern SecurityCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
CAPEC-25Forced Deadlock
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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