CVE-2019-19391

Advisory lineage Upstream: 0 Downstream: 4
Modified
Published: 29 Nov 2019, 15:18
Last modified:03 Nov 2025, 18:07

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.1 CRITICAL
v3.1 (nvd)
EPSS Score
0.21% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

29 Nov 2019, 15:18
Published
Vulnerability first disclosed
03 Nov 2025, 18:07
Last Modified
Vulnerability information updated

Description

In LuaJIT through 2.0.5, as used in Moonjit before 2.1.2 and other products, debug.getinfo has a type confusion issue that leads to arbitrary memory write or read operations, because certain cases involving valid stack levels and > options are mishandled. NOTE: The LuaJIT project owner states that the debug libary is unsafe by definition and that this is not a vulnerability. When LuaJIT was originally developed, the expectation was that the entire debug library had no security guarantees and thus it made no sense to assign CVEs. However, not all users of later LuaJIT derivatives share this perspective

CVSS Metrics

  • v3.1•CRITICAL•Score: 9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
  • v2.0•MEDIUM•Score: 6.4AV:N/AC:L/Au:N/C:P/I:P/A:N

EPSS Trends

Current EPSS score: 0.21%• Percentile: 43%

Techniques & Countermeasures

  • CWE-843•Access of Resource Using Incompatible Type ('Type Confusion')

    The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.

Affected Systems

  • luajit•luajit

    ≤ 2.0.5

  • moonjit_project•moonjit

    < 2.1.2

References (2)