Medium severity · published Jan 11, 2022
CVE-2021-44647
Lua v5.4.3 and above are affected by SEGV by type confusion in funcnamefromcode function in ldebug.c which can cause a local denial of service
5.5
CVSS
0.4%
EPSS
No
On KEV
Description
Lua v5.4.3 and above are affected by SEGV by type confusion in funcnamefromcode function in ldebug.c which can cause a local denial of service.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 36% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
34 · source: NVD
LU
Lua · Lua
5.4.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-44647
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-44647
Exploit
http://lua-users.org/lists/lua-l/2021-11/msg00195.html
Mailing List
http://lua-users.org/lists/lua-l/2021-11/msg00204.html
Third Party Advisory
https://access.redhat.com/security/cve/cve-2021-44647
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/P3EMGAQ5Y6GXJLY4K5DUOOEQT4MZ4J4F/
security.gentoo.org
https://security.gentoo.org/glsa/202305-23
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