High severity · published May 19, 2023
CVE-2023-20881
Cloud foundry instances having CAPI version between 1.140 and 1.152.0 along with loggregator-agent v7+ may override other users syslog drain credentials if they're aware of the…
8.1
CVSS
0.4%
EPSS
No
On KEV
Description
Cloud foundry instances having CAPI version between 1.140 and 1.152.0 along with loggregator-agent v7+ may override other users syslog drain credentials if they're aware of the client certificate used for that syslog drain. This applies even if the drain has zero certs. This would allow the user to override the private key and add or modify a certificate authority used for the connection.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CA
Capi-release · Cloudfoundry
1.140 through 1.152.0 · source: NVD
CF
Cf-deployment · Cloudfoundry
24.7.0 through 29.0.0 · source: NVD
LO
Loggregator-agent · Cloudfoundry
7.0 through 7.2.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-20881
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-20881
Vendor Advisory
https://www.cloudfoundry.org/blog/cve-2023-20881-cas-for-syslog-drain-mtls-feature-can-be-overwritten/
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