CVE-2020-24370: 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)

Medium severity · published Aug 17, 2020

CVE-2020-24370

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)

5.3

CVSS

3.8%

EPSS

On KEV

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:L

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

None

Integrity

None

Availability

Low

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)3.8% · higher than 90% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Debian Linux · Debian

9.0 · source: NVD

Fedora · Fedoraproject

31; 32 · source: NVD

Lua · Lua

5.2.0; 5.2.0; 5.2.0; 5.2.1; 5.2.2; 5.2.3; +11 more · source: NVD

Affected product

Debian Linux

Debian

All Debian Linux CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2020-24370

CVE.org

https://www.cve.org/CVERecord?id=CVE-2020-24370

Exploit

http://lua-users.org/lists/lua-l/2020-07/msg00324.html

Patch

https://github.com/lua/lua/commit/a585eae6e7ada1ca9271607a4f48dfb17868ab7b

Mailing List

https://lists.debian.org/debian-lts-announce/2020/09/msg00019.html

Third Party Advisory

https://lists.debian.org/debian-lts-announce/2023/06/msg00031.html

Third Party Advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E6KONNG6UEI3FMEOY67NDZC32NBGBI44/

Third Party Advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QXYMCIUNGK26VHAYHGP5LPW56G2KWOHQ/