National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2016-6129 Detail

Current Description

The rsa_verify_hash_ex function in rsa_verify_hash.c in LibTomCrypt, as used in OP-TEE before 2.2.0, does not validate that the message length is equal to the ASN.1 encoded data length, which makes it easier for remote attackers to forge RSA signatures or public certificates by leveraging a Bleichenbacher signature forgery attack.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.5 HIGH
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N (V3 legend)
Impact Score: 3.6
Exploitability Score: 3.9


Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): High
Availability (A): None

CVSS v2.0 Severity and Metrics:

Base Score: 5.0 MEDIUM
Vector: (AV:N/AC:L/Au:N/C:N/I:P/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0


Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): Partial
Availability (A): None
Additional Information:
Allows unauthorized modification

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1370955 Issue Tracking Patch
https://github.com/libtom/libtomcrypt/commit/5eb9743410ce4657e9d54fef26a2ee31a1b5dd0 Issue Tracking Patch Third Party Advisory
https://www.op-tee.org/advisories/ Vendor Advisory

Technical Details

Vulnerability Type (View All)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:op-tee:op-tee_os:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
2.1.0

Configuration 2 ( hide )
 cpe:2.3:a:libtom:libtomcrypt:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
1.17


Change History

1 change record found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2016-6129
NVD Published Date:
02/13/2017
NVD Last Modified:
03/13/2017