CVE-2020-36400 — CRITICAL (9.8)

Vulnerability Description

ZeroMQ libzmq 4.3.3 has a heap-based buffer overflow in zmq::tcp_read, a different vulnerability than CVE-2021-20235.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Zeromq	Libzmq	4.3.3

Related Weaknesses (CWE)

CWE-787

References

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26042Issue TrackingMailing ListPatch
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libzmq/OSV-2020-1887.yaThird Party Advisory
https://github.com/zeromq/libzmq/commit/397ac80850bf8d010fae23dd215db0ee2c677306PatchThird Party Advisory
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26042Issue TrackingMailing ListPatch
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libzmq/OSV-2020-1887.yaThird Party Advisory
https://github.com/zeromq/libzmq/commit/397ac80850bf8d010fae23dd215db0ee2c677306PatchThird Party Advisory

FAQ

What is CVE-2020-36400?

CVE-2020-36400 is a vulnerability with a CVSS score of 9.8 (CRITICAL). ZeroMQ libzmq 4.3.3 has a heap-based buffer overflow in zmq::tcp_read, a different vulnerability than CVE-2021-20235.

How severe is CVE-2020-36400?

CVE-2020-36400 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2020-36400?

Check the references section above for vendor advisories and patch information. Affected products include: Zeromq Libzmq.