CVE-2016-6129
libtomcrypt: possible OP-TEE Bleichenbacher attack
Severity
ModerateRed Hat Product Security
CVSS 3.0
Review impact separately from score.
Published · August 26, 2016
Updated · June 6, 2026
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.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.0 · 4.8CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
CVSS 2.0 · 4AV:N/AC:H/Au:N/C:P/I:P/A:N
CWE not specified