High severity · published Jan 8, 2021
CVE-2020-36049
socket.io-parser before 3.4.1 allows attackers to cause a denial of service (memory consumption) via a large packet because a concatenation approach is used
7.5
CVSS
2.7%
EPSS
No
On KEV
Description
socket.io-parser before 3.4.1 allows attackers to cause a denial of service (memory consumption) via a large packet because a concatenation approach is used.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.7% · higher than 86% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SO
Socket.io-parser · Socket
before 3.4.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-36049
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-36049
Exploit
https://blog.caller.xyz/socketio-engineio-dos/
Third Party Advisory
https://github.com/bcaller/kill-engine-io
Patch
https://github.com/socketio/socket.io-parser/commit/dcb942d24db97162ad16a67c2a0cf30875342d55
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