CVE-2021-33586
MEDIUMCVSS 4.3/10EPSS 0.89%
Last modified
CVE-2021-33586 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. 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.. EPSS estimates a 0.89% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Inspircd | Inspircd | >= 3.8.0, < 3.10.0 |
References
- https://docs.inspircd.org/security/2021-01/Patch, Vendor Advisory
- https://github.com/inspircd/inspircd/commit/4350a11c663b0d75f8119743bffb7736d87abd4dPatch, Third Party Advisory
- https://security.gentoo.org/glsa/202107-22Third Party Advisory
- https://docs.inspircd.org/security/2021-01/Patch, Vendor Advisory
- https://github.com/inspircd/inspircd/commit/4350a11c663b0d75f8119743bffb7736d87abd4dPatch, Third Party Advisory
- https://security.gentoo.org/glsa/202107-22Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-33586?
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.
How severe is CVE-2021-33586?
CVE-2021-33586 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.89% probability of exploitation in the next 30 days.
How do I fix CVE-2021-33586?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-33586?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST