Vulnerability · Published Jul 27, 2021 · Assigned by mitre
CVE-2021-36754
High 7.5
In plain English
A high-severity security flaw in the pdns package (Alpine). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 64.9% (higher than 99.3% of all known vulnerabilities). Ready-made attack tooling exists: Nuclei. Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)64.9%top 0.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack tooling1Nuclei
Official description
PowerDNS Authoritative Server 4.5.0 before 4.5.1 allows anybody to crash the process by sending a specific query (QTYPE 65535) that causes an out-of-bounds exception.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | pdns | 4.5.1-r0 | ALPINE-CVE-2021-36754 |
| Alpine:v3.21 | pdns | 4.5.1-r0 | ALPINE-CVE-2021-36754 |
| Alpine:v3.22 | pdns | 4.5.1-r0 | ALPINE-CVE-2021-36754 |
| Alpine:v3.23 | pdns | 4.5.1-r0 | ALPINE-CVE-2021-36754 |
| Alpine:v3.24 | pdns | 4.5.1-r0 | ALPINE-CVE-2021-36754 |
Affected products (as reported)
References
- https://doc.powerdns.com/authoritative/security-advisories/index.html x_refsource_MISC
- [oss-security] 20210726 security advisory 2021-01 for PowerDNS Authoritative Server 4.5.0 mailing-list, x_refsource_MLIST
- https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2021-01.html x_refsource_CONFIRM