CVE-2020-14147: Buffer Overflow
An integer overflow in the getnum function in luastruct.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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/redisto a version that resolves this vulnerability.Fixed in 5:5.0.14-1+deb10u2Fixed in 5:5.0.14-1+deb10u4Fixed in 5:6.0.16-1+deb11u2Fixed in 5:7.0.11-1Fixed in 5:7.0.13-2Fixed in 5:7.0.14-1 - Upgrade
Upgrade
alpine/redisto a version that resolves this vulnerability.Fixed in 6.0.3-r0 - Upgrade
Upgrade
Redisto a version that resolves this vulnerability.Fixed in 6.0.3
Event History
Frequently Asked Questions
What is the vulnerability ID for this vulnerability?
The vulnerability ID for this vulnerability is CVE-2020-14147.
What is the severity of CVE-2020-14147?
The severity of CVE-2020-14147 is high.
Which software versions are affected by CVE-2020-14147?
Redislabs Redis versions up to 5.0.9 and versions between 6.0.0 and 6.0.3, Oracle Communications Operations Monitor versions 3.4, 4.1, 4.2, and 4.3, SUSE Linux Enterprise version 12.0, and Debian Debian Linux version 10.0 are affected by CVE-2020-14147.
How can an attacker exploit CVE-2020-14147?
An attacker with permission to run Lua code in a Redis session can exploit CVE-2020-14147 by causing a denial of service (memory corruption and application crash) or bypassing intended sandbox restrictions via a large input.
Is there a fix available for CVE-2020-14147?
Yes, to fix CVE-2020-14147, it is recommended to upgrade to Redislabs Redis version 5.0.14-1+deb10u2, 5.0.14-1+deb10u4, or 6.0.16-1+deb11u2, or Debian Debian Linux version 7.0.11-1, 7.0.13-2, or 7.0.14-1.