Summary
The SCALANCE W1750D device contains multiple vulnerabilities in the integrated OpenSSL component that could allow an attacker to read memory contents, decrypt RSA-encrypted messages or create a denial of service condition.
Siemens has released new versions for the affected products and recommends to update to the latest versions.
Vulnerabilities 4
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High 7.5CVE-2022-4450 EPSS 29%
Double free after calling PEM_read_bio_ex
The function PEM_read_bio_ex() reads a PEM file from a BIO and parses and decodes the "name" (e.g. "CERTIFICATE"), any header data and the payload data. If the function succeeds then the "name_out", "header" and "data" arguments are populated with pointers to…
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High 7.5
Use-after-free following BIO_new_NDEF
The public API function BIO_new_NDEF is a helper function used for streaming ASN.1 data via a BIO. It is primarily used internally to OpenSSL to support the SMIME, CMS and PKCS7 streaming capabilities, but may also be called directly by end user applications.…
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High 7.4
X.400 address type confusion in X.509 GeneralName
There is a type confusion vulnerability relating to X.400 address processing inside an X.509 GeneralName. X.400 addresses were parsed as an ASN1_STRING but the public structure definition for GENERAL_NAME incorrectly specified the type of the x400Address fiel…
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Medium 5.9
Timing Oracle in RSA Decryption
A timing based side channel exists in the OpenSSL RSA Decryption implementation which could be sufficient to recover a plaintext across a network in a Bleichenbacher style attack. To achieve a successful decryption an attacker would have to be able to send a …
Revision history
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#3
Added fix for SCALANCE W1750D family
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#2
Clarify that currently no fix is planned
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#1
Publication Date
References
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SSA-203374: Multiple OpenSSL Vulnerabilities in SCALANCE W1750D Devices - HTML Version
https://cert-portal.siemens.com/productcert/html/ssa-203374.html
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SSA-203374: Multiple OpenSSL Vulnerabilities in SCALANCE W1750D Devices - PDF Version
https://cert-portal.siemens.com/productcert/pdf/ssa-203374.pdf
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SSA-203374: Multiple OpenSSL Vulnerabilities in SCALANCE W1750D Devices - TXT Version
https://cert-portal.siemens.com/productcert/txt/ssa-203374.txt