Information exposure through timing discrepancy in IBM PowerSC



Published: 2023-01-25
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-15522
CWE-ID CWE-208
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		PowerSC
Operating systems & Components / Operating system

Vendor IBM Corporation

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Information Exposure Through Timing Discrepancy

EUVDB-ID: #VU55035

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2020-15522

CWE-ID: CWE-208 - Information Exposure Through Timing Discrepancy

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to a timing issue within the EC math library. A remote attacker who can observe timing information for the generation of multiple deterministic ECDSA signatures is able to reconstruct the private key used for encryption.

Mitigation

Install update from vendor's website.

Vulnerable software versions

PowerSC: before 2.1.0.4

CPE2.3
External links

http://www.ibm.com/support/pages/node/6856465

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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