Security Bulletin
Summary
Trusteer Mobile SDK which uses libtomcrypto lib is vulnerable to a denial of service issue. IBM has addressed the issue in the latest version of the SDK.
Vulnerability Details
DESCRIPTION: LibTomCrypt is vulnerable to a denial of service, caused by the failure to properly detect certain invalid UTF-8 sequences in der_decode_utf8_string function in der_decode_utf8_string.c. By providing crafted DER-encoded data, a remote attacker could exploit this vulnerability to cause the application to crash or obtain sensitive information.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/169106 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| Trusteer iOS SDK for mobile | All |
Remediation/Fixes
IBM backported the fix into the SDK.
The updated version can be download from the IBM Trusteer Customer Portal:
Workarounds and Mitigations
None
Get Notified about Future Security Bulletins
References
Acknowledgement
Jonathan Fitz-Gerald, John Zuccato, Rodney Ryan, Chris Shepherd, Nathan Roane, Kamil Sarbinowski, Vince Dragnea, Troy Fisher and Elaheh Samani from IBM X-Force Ethical Hacking Team.
Change History
02 Dec 2020: Initial Publication
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.
Disclaimer
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
Document Location
Worldwide
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Document Information
Modified date:
03 December 2020
Initial Publish date:
02 December 2020
UID
ibm16377866