Medium severity · published Jun 18, 2021
CVE-2021-33577
An issue was discovered in Cleo LexiCom 5.5.0.0
5.3
CVSS
0.6%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HA
Harmony · Cleo
5.5.0.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-33577
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-33577
Exploit
https://github.com/atredispartners/advisories/blob/master/ATREDIS-2020-0011.md
Product
https://www.cleo.com/cleo-lexicom
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