CVE-2016-6129: libtom libtomcrypt Improper Input Validation
Vulnerability summary
CVE-2016-6129 is a high (CVSS 7.5) Improper Input Validation vulnerability in libtom libtomcrypt. EPSS estimates a 0.78% chance of exploitation in the next 30 days, higher than 55% of scored vulnerabilities.
Timeline
- 13-02-2017PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
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 metrics
5 scores · 3 sources · 3 versions- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS trend
Probability
0.78%
Chance of exploitation in the next 30 days
Percentile
55%
Versus all other CVEs
30-day change
0.00 pp
From 0.78% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian1 product
- libtomcrypt< 1.17-8 | < 1.17-3.2+deb7u1
Libtom1 product
- libtomcrypt≤ 1.17
Mageia1 product
- libtomcrypt< 1.17-7.1.mga5
Trustedfirmware1 product
- op-tee< 2.2.0
Ubuntu1 product
- libtomcrypt< 1.17-5ubuntu0.1 | < 1.17-7ubuntu0.1
5 vendors · 5 products
References
11 links- github.com/libtom/libtomcrypt/commit/5eb9743410ce4657e9d54fef26a2ee31a1b5dd0X Refsource CONFIRMIssue TrackingPatchThird Party Advisory
