CVE-2020-15889

CRITICAL EPSS 80.6%
Published Jul 21, 20205y ago · Modified Jun 17, 20262w ago
9.8 CVSS 3.1
Critical
Find Similar
Published Jul 21, 2020 5y ago
Last Modified Jun 17, 2026 2w ago

Description

Lua 5.4.0 has a getobjname heap-based buffer over-read because youngcollection in lgc.c uses markold for an insufficient number of list members.

CVSS Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
80.6% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-125 Out-of-bounds Read Memory Safety

Affected Products 1

VendorProductVersionRange
lualua5.4.0any

References 3

  • lua-users.org http://lua-users.org/lists/lua-l/2020-07/msg00078.html
    ExploitMailing ListThird Party Advisory
  • lua-users.org http://lua-users.org/lists/lua-l/2020-12/msg00157.html
    Mailing ListThird Party Advisory
  • github.com https://github.com/lua/lua/commit/127e7a6c8942b362aa3c6627f44d660a4fb75312
    PatchThird Party Advisory

Remediation

  • github.com https://github.com/lua/lua/commit/127e7a6c8942b362aa3c6627f44d660a4fb75312
    PatchThird Party Advisory