CVE-2020-20949
Title: St Stm32Cubeh7 Cryptographic Failures
Cryptographic Failures
Proof Of Concept
No public PoC currently indexed for CVE-2020-20949.
CWE Category
CWE-327
Published Date
Jan 20, 2021
Modified Date
Nov 21, 2024
Exploit Status
Not Found
Score
5.9
CVSS v3.1
Exploit Probability (EPSS)
0.59%
Vulnerability Summary
CVE-2020-20949: Bleichenbacher's attack on PKCS #1 v1.5 padding for RSA in STM32 cryptographic firmware library software expansion for STM32Cube (UM1924). The vulnerability can allow one to use Bleichenbacher's oracle attack to decrypt an encrypted ciphertext by making successive queries to the server using the vulnerable library, resulting in remote information disclosure.
Impacted Vendors
Reference Links
http://archiv.infsec.ethz.ch/education/fs08/secsem/bleichenbacher98.pdf
http://st.com
http://x-cube-cryptolib.com
https://bi-zone.medium.com/silence-will-fall-or-how-it-can-take-2-years-to-get-your-vuln-registered-e6134846f5bb
https://www.st.com/en/embedded-software/x-cube-cryptolib.html
http://archiv.infsec.ethz.ch/education/fs08/secsem/bleichenbacher98.pdf
http://st.com
http://x-cube-cryptolib.com
https://bi-zone.medium.com/silence-will-fall-or-how-it-can-take-2-years-to-get-your-vuln-registered-e6134846f5bb
https://www.st.com/en/embedded-software/x-cube-cryptolib.html
CVSS v3.1
Source Entity
[email protected]
Severity
MEDIUM
5.9
Attack Vector
NETWORK
Complexity
HIGH
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v2.0
Source Entity
[email protected]
Severity
MEDIUM
4.3
Access Vector
N/A
Authentication
N/A
RAW VECTOR
AV:N/AC:M/Au:N/C:P/I:N/A:N
Associated Attack Patterns (CAPEC)
Total: PatternsNo specific attack patterns mapped.
Likelihood
Severity
Page /
CVE-2020-20949 Exploits & PoCs (Proof Of Concept)
No public PoCs found in our database for this CVE.
MODIFIED
Vulnerability data or affected products updated.
PUBLISHED
Vulnerability first announced in NVD.
Attack Vector Matrix
Access Vector
NETWORK
Complexity
HIGH
Privileges
N/A
Interaction
NONE
CVSS Vector String
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected Stack
No specific products linked.