An integer overflow in the getnum function in lua_struct.c in Redis before 6.0.3 allows context-dependent attackers with permission to run Lua code in a Redis session to cause a denial of service (memory corruption and application crash) or possibly bypass intended sandbox restrictions via a large number, which triggers a stack-based buffer overflow. NOTE: this issue exists because of a CVE-2015-8080 regression.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14147
Reference (s):
- DEBIAN:DSA-4731
- URL: https://www.debian.org/security/2020/dsa-4731
- GENTOO:GLSA-202008-17
- URL: https://security.gentoo.org/glsa/202008-17
- https://github.com/antirez/redis/commit/ef764dde1cca2f25d00686673d1bc89448819571