CVE-2020-24342 : Lua through 5.4.0 allows a stack redzone cross in luaO

Lua through 5.4.0 allows a stack redzone cross in luaO_pushvfstring because a protection mechanism wrongly calls luaD_callnoyield twice in a row.

Published 2020-08-13 19:15:14

Updated 2021-01-26 15:54:17

Source MITRE

View at NVD, CVE.org

Vulnerability category: Overflow

Products affected by CVE-2020-24342

Fedoraproject » Fedora » Version: 33
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
Matching versions
LUA » LUA » Version: 5.4.0
cpe:2.3:a:lua:lua:5.4.0:*:*:*:*:*:*:*
Matching versions

Top countries where our scanners detected CVE-2020-24342

Top open port discovered on systems with this issue 80

IPs affected by CVE-2020-24342 2

Find out if you^* are affected by CVE-2020-24342!

^*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

EPSS FAQ

0.12%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 47 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
6.8	MEDIUM	AV:N/AC:M/Au:N/C:P/I:P/A:P	8.6	6.4	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
7.8	HIGH	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	1.8	5.9	NIST
Attack Vector: Local Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

Assigned by: nvd@nist.gov (Primary)

http://lua-users.org/lists/lua-l/2020-07/msg00052.html

Stack overflow in luaO_pushvfstring
Exploit;Mailing List;Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QA5Q5MDQMTGXRQO3PAQ4EZFTYWJXZM5N/

[SECURITY] Fedora 33 Update: lua-5.4.0-7.fc33 - package-announce - Fedora Mailing-Lists
Third Party Advisory
https://github.com/lua/lua/commit/34affe7a63fc5d842580a9f23616d057e17dfe27

Fixed bug: 'luaD_callnoyield' called twice in a row · lua/lua@34affe7 · GitHub
Patch;Third Party Advisory

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