Use After Free The advisory has been revoked - it doesn't affect any version of package lua50 (opens in a new tab)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1404-LUA50-269032
- published23 Jan 2019
- disclosed23 Jan 2019
Introduced: 23 Jan 2019
CVE-2019-6706 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:14.04.
NVD Description
Note: Versions mentioned in the description apply only to the upstream lua50 package and not the lua50 package as distributed by Ubuntu.
Lua 5.3.5 has a use-after-free in lua_upvaluejoin in lapi.c. For example, a crash outcome might be achieved by an attacker who is able to trigger a debug.upvaluejoin call in which the arguments have certain relationships.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2019-6706
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6706
- https://security-tracker.debian.org/tracker/CVE-2019-6706
- https://www.exploit-db.com/exploits/46246/
- http://lua.2524044.n2.nabble.com/Bug-Report-Use-after-free-in-debug-upvaluejoin-tc7685506.html
- https://access.redhat.com/errata/RHSA-2019:3706
- https://usn.ubuntu.com/3941-1/
- http://lua-users.org/lists/lua-l/2019-01/msg00039.html
- http://packetstormsecurity.com/files/151335/Lua-5.3.5-Use-After-Free.html
- https://access.redhat.com/security/cve/cve-2019-6706
- https://github.com/Lua-Project/cve-analysis/blob/a43c9ccd00274b31fa2f24c6c8f20ce36655682d/CVE-2019-6706.pdf
- https://github.com/lua/lua/commit/89aee84cbc9224f638f3b7951b306d2ee8ecb71e
- https://lists.debian.org/debian-lts-announce/2023/06/msg00031.html
- https://www.exploit-db.com/exploits/46246