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High severity · published Oct 10, 2023
CVE-2023-42796
A vulnerability has been identified in CP-8031 MASTER MODULE (All versions < CPCI85 V05.11), CP-8050 MASTER MODULE (All versions < CPCI85 V05.11)
8.8
CVSS
1%
EPSS
No
On KEV
Description
A vulnerability has been identified in CP-8031 MASTER MODULE (All versions < CPCI85 V05.11), CP-8050 MASTER MODULE (All versions < CPCI85 V05.11). The web server of affected devices fails to properly sanitize user input for the /sicweb-ajax/tmproot/ endpoint. This could allow an authenticated remote attacker to traverse directories on the system and download arbitrary files. By exploring active session IDs, the vulnerability could potentially be leveraged to escalate privileges to the administrator role.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 62% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CM
CP-8031 MASTER MODULE · Siemens
All versions < CPCI85 V05.11 · source: vendor
CM
CP-8050 MASTER MODULE · Siemens
All versions < CPCI85 V05.11 · source: vendor
CF
Cp-8031 Firmware · Siemens
before 05.11 · source: NVD
CF
Cp-8050 Firmware · Siemens
before 05.11 · source: NVD
Affected product
CM
CP-8031 MASTER MODULE
Siemens
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-42796
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-42796
Patch
https://cert-portal.siemens.com/productcert/pdf/ssa-770890.pdf
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