CVE-2016-6129

Name: CVE-2016-6129
Creator: NVD / NIST
Published: 2017-02-13T18:59:00.66+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.78%

Last modified Jun 17, 2026

CVE-2016-6129 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 0.78% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

0.78%

51.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Trustedfirmware	Op-Tee	< 2.2.0
Libtom	Libtomcrypt	<= 1.17

References

https://bugzilla.redhat.com/show_bug.cgi?id=1370955Issue Tracking, Patch
https://github.com/libtom/libtomcrypt/commit/5eb9743410ce4657e9d54fef26a2ee31a1b5dd0Issue Tracking, Patch, Third Party Advisory
https://www.op-tee.org/advisories/Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1370955Issue Tracking, Patch
https://github.com/libtom/libtomcrypt/commit/5eb9743410ce4657e9d54fef26a2ee31a1b5dd0Issue Tracking, Patch, Third Party Advisory
https://www.op-tee.org/advisories/Vendor Advisory

Timeline

Published: Feb 13, 2017
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2016-6129?

How severe is CVE-2016-6129?

CVE-2016-6129 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.78% probability of exploitation in the next 30 days.

How do I fix CVE-2016-6129?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-6129?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST