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Ubuntu Security Notice USN-6916-1
Ubuntu Security Notice 6916-1 - It was discovered that Lua did not properly generate code when “_ENV” is constant. An attacker could possibly use this issue to cause a denial of service or execute arbitrary unstrusted lua code. It was discovered that Lua did not properly handle C stack overflows during error handling. An attacker could possibly use this issue to cause a denial of service.
==========================================================================Ubuntu Security Notice USN-6916-1July 29, 2024lua5.4 vulnerabilities==========================================================================A security issue affects these releases of Ubuntu and its derivatives:- Ubuntu 22.04 LTSSummary:Several security issues were fixed in Lua.Software Description:- lua5.4: Simple, extensible, embeddable programming languageDetails:It was discovered that Lua did not properly generate code when "_ENV" isconstant. An attacker could possibly use this issue to cause a denial ofservice or execute arbitrary unstrusted lua code. (CVE-2022-28805)It was discovered that Lua did not properly handle C stack overflows duringerror handling. An attacker could possibly use this issue to cause a denialof service. (CVE-2022-33099)Update instructions:The problem can be corrected by updating your system to the followingpackage versions:Ubuntu 22.04 LTS lua5.4 5.4.4-1ubuntu0.1~esm1 Available with Ubuntu ProIn general, a standard system update will make all the necessary changes.References: https://ubuntu.com/security/notices/USN-6916-1 CVE-2022-28805, CVE-2022-33099Related news
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An issue in the component luaG_runerror of Lua v5.4.4 and below leads to a heap-buffer overflow when a recursive error occurs.
singlevar in lparser.c in Lua through 5.4.4 lacks a certain luaK_exp2anyregup call, leading to a heap-based buffer over-read that might affect a system that compiles untrusted Lua code.