CVE-2020-24370 — Integer Underflow (Wrap or Wraparound) in Lua5.3

CWE-191 — Integer Underflow (Wrap or Wraparound)CWE-682 — Incorrect Calculation7 documents7 sources
Severity
5.3MEDIUMNVD
EPSS
2.0%
top 16.21%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
8
Debian Lua5.3Debian Lua5.4Debian Linux+5 more
Timeline
PublishedAug 17
Latest updateMay 24

Description

ldebug.c in Lua 5.4.0 allows a negation overflow and segmentation fault in getlocal and setlocal, as demonstrated by getlocal(3,2^31).

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LExploitability: 3.9 | Impact: 1.4

Affected Packages6 packages

▶debiandebian/lua5.3< lua5.3 5.3.6-1 (bookworm)
▶debiandebian/lua5.4< lua5.3 5.3.6-1 (bookworm)
▶NVDlua/lua11 versions+10

Also affects: Debian Linux 9.0, Fedora 31, 32

Patches

Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

2
GHSA
GHSA-gfr4-c37g-mm3v: ldebug↗2022-05-24
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OSV
CVE-2020-24370: ldebug↗2020-08-17
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📋Vendor Advisories

3
Microsoft
ldebug.c in Lua 5.4.0 allows a negation overflow and segmentation fault in getlocal and setlocal as demonstrated by getlocal(32^31).↗2020-08-11
▶
Red Hat
lua: segmentation fault in getlocal and setlocal functions in ldebug.c↗2020-07-24
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Debian
CVE-2020-24370: lua5.3 - ldebug.c in Lua 5.4.0 allows a negation overflow and segmentation fault in getlo...↗2020
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💬Community

1
Bugzilla
CVE-2020-24370 lua: segmentation fault in getlocal and setlocal functions in ldebug.c↗2020-08-19
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CVE-2020-24370 — Integer Underflow (Wrap or Wraparound) | cvebase