CVE-2021-33254 — HIGH (7.5)

Vulnerability Description

An issue was discovered in src/http/httpLib.c in EmbedThis Appweb Community Edition 8.2.1, allows attackers to cause a denial of service via the stream paramter to the parseUri function.

CVSS Score

7.5

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Embedthis	Appweb	8.2.1
Linux	Linux Kernel	-

Related Weaknesses (CWE)

CWE-476

References

https://awxylitol.github.io/2021/05/09/embedthis-appweb-npd-bug.htmlExploitPatchThird Party Advisory
https://awxylitol.github.io/2021/05/09/embedthis-appweb-npd-bug.htmlExploitPatchThird Party Advisory

FAQ

What is CVE-2021-33254?

CVE-2021-33254 is a vulnerability with a CVSS score of 7.5 (HIGH). An issue was discovered in src/http/httpLib.c in EmbedThis Appweb Community Edition 8.2.1, allows attackers to cause a denial of service via the stream paramter to the parseUri function.

How severe is CVE-2021-33254?

CVE-2021-33254 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-33254?

Check the references section above for vendor advisories and patch information. Affected products include: Embedthis Appweb, Linux Linux Kernel.