CVE-2020-24342
HIGHCVSS 7.8/10EPSS 1.08%
Last modified
CVE-2020-24342 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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.. EPSS estimates a 1.08% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Lua | Lua | 5.4.0 |
| Fedoraproject | Fedora | 33 |
References
- http://lua-users.org/lists/lua-l/2020-07/msg00052.htmlExploit, Mailing List, Vendor Advisory
- https://github.com/lua/lua/commit/34affe7a63fc5d842580a9f23616d057e17dfe27Patch, Third Party Advisory
- http://lua-users.org/lists/lua-l/2020-07/msg00052.htmlExploit, Mailing List, Vendor Advisory
- https://github.com/lua/lua/commit/34affe7a63fc5d842580a9f23616d057e17dfe27Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-24342?
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.
How severe is CVE-2020-24342?
CVE-2020-24342 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.08% probability of exploitation in the next 30 days.
How do I fix CVE-2020-24342?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2020-24342?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST