Mujs
CVE-2022-30975
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A10:2025 - Mishandling of Exceptional Conditions
ASVS 5.0
V16 - Security Logging and Error Handling Null pointer safety, defensive checks
MITRE ATT&CK
1 technique across 1 tactic: Impact The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 5.5 (MEDIUM). Attack characteristics: local attack vector, low complexity, no privileges required, user interaction required. Public proof-of-concept exploit code is available. |
| Exploit ScenarioDerived | A local attacker with access to the system could crash the application by dereferencing a null pointer. No authentication is required to exploit this vulnerability. |
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Alert meAnalysisAI
In Artifex MuJS through 1.2.0, jsP_dumpsyntax in jsdump.c has a NULL pointer dereference, as demonstrated by mujs-pp. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Check pointers before dereferencing. Use static analysis tools to detect null pointer paths.
Affects your stack
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Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as NULL Pointer Dereference (CWE-476), which allows attackers to crash the application by dereferencing a null pointer. In Artifex MuJS through 1.2.0, jsP_dumpsyntax in jsdump.c has a NULL pointer dereference, as demonstrated by mujs-pp. Affected products include: Artifex Mujs, Debian Debian Linux, Fedoraproject Fedora. Version information: through 1.2.0.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
In Artifex MuJS through 1.2.0, jsP_dumpsyntax in jsdump.c has a NULL pointer dereference, as demonstrated by mujs-pp.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
A null pointer dereference occurs when a program attempts to access memory through a pointer that has been set to NULL (address 0x0).
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
Affected Products (CPE)NVD
A use-after-free vulnerability was observed in Rp_toString function of Artifex Software, Inc. Rated critical severity (C
A buffer overflow vulnerability was observed in divby function of Artifex Software, Inc. Rated critical severity (CVSS 9
Artifex MuJS through 1.0.7 has a use-after-free in jsrun.c because of unconditional marking in jsgc.c. Rated high severi
Artifex Software MuJS allows attackers to cause a denial of service (crash) via vectors related to incomplete escape seq
An out-of-bounds read vulnerability was observed in Sp_replace_regexp function of Artifex Software, Inc. Rated high seve
Artifex Software, Inc. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication req
The chartorune function in Artifex Software MuJS allows attackers to cause a denial of service (out-of-bounds read) via
Heap-based buffer overflow in the Fp_toString function in jsfunction.c in Artifex Software MuJS allows attackers to caus
Artifex Software, Inc. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication req
Heap out-of-bounds read and write in MuJS 1.3.6 through 1.3.8 allows attackers to corrupt process memory by supplying Ja
An integer overflow vulnerability was observed in the regemit function in regexp.c in Artifex Software, Inc. Rated criti
Heap-based buffer overflow in the js_stackoverflow function in jsrun.c in Artifex Software, Inc. Rated critical severity
Exploit-DB