CVE-2016-6129

libtomcrypt: possible OP-TEE Bleichenbacher attack

Published Feb 13, 2017 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-612-1 libtomcrypt security update
EUVD EUVD EUVD-2016-7063 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.
History
Type Values Removed Values Added
First Time appeared Trustedfirmware
Trustedfirmware op-tee
CPEs cpe:2.3:o:op-tee:op-tee_os:*:*:*:*:*:*:*:* cpe:2.3:o:trustedfirmware:op-tee:*:*:*:*:*:*:*:*
Vendors & Products Op-tee
Op-tee op-tee Os
Trustedfirmware
Trustedfirmware op-tee
Metrics cvssV3_0

{'score': 7.5, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}

cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}

cvssV3_0

{'score': 4.8, 'vector': 'CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Aug 6, 2024, 1:22 AM
Reserved
Jun 30, 2016, 12:00 AM
Status
Analyzed
Published
Feb 13, 2017, 6:59 PM
Modified
Jun 17, 2026, 12:50 AM
Severity
Moderate
Public date
Aug 26, 2016, 12:00 AM