HOMEVULNERABILITIESCVE-2016-6129
HIGH

CVE-2016-6129

CWE-20Published: February 13, 2017· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2016-6129 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected Vendors & Products

libtom1 product(s)
libtomcrypt
trustedfirmware1 product(s)
op-tee
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=1370955
PATCHhttps://github.com/libtom/libtomcrypt/commit/5eb9743410ce4657e9d54fef26a2ee31a1b5dd0
PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=1370955
PATCHhttps://github.com/libtom/libtomcrypt/commit/5eb9743410ce4657e9d54fef26a2ee31a1b5dd0
ADVISORYhttps://www.op-tee.org/advisories/
ADVISORYhttps://www.op-tee.org/advisories/

All References (6)

→
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

Quick Facts

CVE IDCVE-2016-6129
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-20
CISA KEVNo
Affected2 vendor(s)
PublishedFeb 13, 2017

Related CVEs (CWE-20)

CVE-2011-0073
10.0
CVE-2010-0270
10.0
CVE-2008-4318
10.0
CVE-2025-23202
10.0
CVE-2008-4329
10.0
CVE-2009-1350
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2016-6129 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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