Vulnerability · Published May 27, 2021 · Assigned by mitre
CVE-2021-33586
Medium 4.3
In plain English
A medium-severity security flaw in the inspircd package (Alpine). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 60% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)4.3Medium
Exploit odds (30 days)0.9%top 40.5% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
InspIRCd 3.8.0 through 3.9.x before 3.10.0 allows any user (able to connect to the server) to access recently deallocated memory, aka the "malformed PONG" issue.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | inspircd | 3.10.0-r0 | ALPINE-CVE-2021-33586 |
| Alpine:v3.21 | inspircd | 3.10.0-r0 | ALPINE-CVE-2021-33586 |
| Alpine:v3.22 | inspircd | 3.10.0-r0 | ALPINE-CVE-2021-33586 |
| Alpine:v3.23 | inspircd | 3.10.0-r0 | ALPINE-CVE-2021-33586 |
| Alpine:v3.24 | inspircd | 3.10.0-r0 | ALPINE-CVE-2021-33586 |
| Debian:12 | inspircd | 3.8.1-2 | DEBIAN-CVE-2021-33586 |
| Debian:13 | inspircd | 3.8.1-2 | DEBIAN-CVE-2021-33586 |
Affected products (as reported)
References
- https://docs.inspircd.org/security/2021-01/ x_refsource_MISC
- https://github.com/inspircd/inspircd/commit/4350a11c663b0d75f8119743bffb7736d87abd4d x_refsource_MISC
- GLSA-202107-22 vendor-advisory, x_refsource_GENTOO