VulnerabilityModified
CVE-2022-28805
singlevar in lparser.c in Lua from (including) 5.4.0 up to (excluding) 5.4.4 lacks a certain luaK_exp2anyregup call, leading to a heap-based buffer over-read that might affect a system that compiles untrusted Lua code.
CRITICAL 9.1EPSS 3.00%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.00%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
singlevar in lparser.c in Lua from (including) 5.4.0 up to (excluding) 5.4.4 lacks a certain luaK_exp2anyregup call, leading to a heap-based buffer over-read that might affect a system that compiles untrusted Lua code.
- CVSS 3.1
- 9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- EPSS
- 3.00% probability · 87th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- lua/lua · fedoraproject/fedora
- Source
- cve@mitre.org
References
- https://github.com/lua/lua/commit/1f3c6f4534c6411313361697d98d1145a1f030faPatch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RJNJ66IFDUKWJJZXHGOLRGIA3HWWC36R/Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UHYZOEFDVLVAD6EEP4CDW6DNONIVVHPA/Third Party Advisory
- https://lua-users.org/lists/lua-l/2022-02/msg00001.htmlExploit, Mailing List, Third Party Advisory
- https://lua-users.org/lists/lua-l/2022-02/msg00070.htmlExploit, Mailing List, Third Party Advisory
- https://lua-users.org/lists/lua-l/2022-04/msg00009.htmlExploit, Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202305-23Third Party Advisory
- https://github.com/lua/lua/commit/1f3c6f4534c6411313361697d98d1145a1f030faPatch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RJNJ66IFDUKWJJZXHGOLRGIA3HWWC36R/Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UHYZOEFDVLVAD6EEP4CDW6DNONIVVHPA/Third Party Advisory
- https://lua-users.org/lists/lua-l/2022-02/msg00001.htmlExploit, Mailing List, Third Party Advisory
- https://lua-users.org/lists/lua-l/2022-02/msg00070.htmlExploit, Mailing List, Third Party Advisory
- https://lua-users.org/lists/lua-l/2022-04/msg00009.htmlExploit, Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202305-23Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.