Integer overflow in Redis
CVE-2021-21309
Redis is an open-source, in-memory database that persists on disk. In affected versions of Redis an integer overflow bug in 32-bit Redis version 4.0 or newer could be exploited to corrupt the heap and potentially result with remote code ex…
Vulnerability class: Integer Overflow
EPSS: 0.047 (90.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:L.
Affected products
- Redis — versions < 5.0.11, >= 6.0.0, < 6.0.11
- Redislabs Redis
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)
- security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)
- security-advisories@github.com (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
Frequently asked questions
- What is CVE-2021-21309?
- CVE-2021-21309 is a medium-severity vulnerability in Redis, classified under Integer Overflow or Wraparound. CVSS score: 5.4/10. Published 2021-02-26.
- How severe is CVE-2021-21309?
- Medium severity. CVSS v3 base score is 5.4 out of 10.