CVE-2021-33577 — MEDIUM (5.3)

Vulnerability Description

An issue was discovered in Cleo LexiCom 5.5.0.0. The requirement for the sender of an AS2 message to identify themselves (via encryption and signing of the message) can be bypassed by changing the Content-Type of the message to text/plain.

CVSS Score

5.3

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Cleo	Lexicom	5.5.0.0

References

https://github.com/atredispartners/advisories/blob/master/ATREDIS-2020-0011.mdExploitThird Party Advisory
https://www.cleo.com/cleo-lexicomProduct
https://github.com/atredispartners/advisories/blob/master/ATREDIS-2020-0011.mdExploitThird Party Advisory
https://www.cleo.com/cleo-lexicomProduct

FAQ

What is CVE-2021-33577?

CVE-2021-33577 is a vulnerability with a CVSS score of 5.3 (MEDIUM). An issue was discovered in Cleo LexiCom 5.5.0.0. The requirement for the sender of an AS2 message to identify themselves (via encryption and signing of the message) can be bypassed by changing the Con...

How severe is CVE-2021-33577?

CVE-2021-33577 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-33577?

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