CVE-2018-12437
4.9 MEDIUMLibTomCrypt through 1.18.1 allows a memory-cache side-channel attack on ECDSA signatures, aka the Return Of the Hidden Number Problem or ...
Published: 2018-06-15 · Last updated: 2026-06-05
Severity and scoring
- CVSS
- 4.9 MEDIUM
- Vector
- CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
- CWE
- CWE-200
Affected products
| Vendor | Product |
|---|---|
| libtom | libtomcrypt, op-tee |
| trustedfirmware | libtomcrypt, op-tee |
Description
LibTomCrypt through 1.18.1 allows a memory-cache side-channel attack on ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2018-12437
- [Other]https://security.gentoo.org/glsa/202007-53
- [Exploit reference]https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/
- [Other]https://security.gentoo.org/glsa/202007-53
- [Exploit reference]https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/
Related CVEs
Same vendor
- CVE-2026-45702 — OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on Arm; Cortex-A cores using t... (4.4 MEDIUM)
- CVE-2026-45614 — OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on Arm; Cortex-A cores using t... (4.7 MEDIUM)
- CVE-2026-40290 — OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on Arm; Cortex-A cores using t... (7.8 HIGH)
- CVE-2026-33662 — OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on Arm; Cortex-A cores using t... (7.5 HIGH)
- CVE-2026-33317 — OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on Arm; Cortex-A cores using t... (8.7 HIGH)
Same CWE
- CVE-2026-12117 — Improper access control in the social login connection endpoint in Devolutions Server 2026.2.5 allows an authenticated vault member to ...
- CVE-2026-12320 — Information disclosure in the Password Manager component (4.3 MEDIUM)
- CVE-2026-12311 — Information disclosure, sandbox escape in the Security: Process Sandboxing component (4.7 MEDIUM)
- CVE-2026-50870 — An information disclosure vulnerability in the configuration endpoint of Ben Busby whoogle-search v1.2.3 allows attackers to obtain sensi... (7.5 HIGH)
- CVE-2026-39007 — An issue in Observeinc's Observe v.2026-01-28 and before allows a remote attacker to obtain sensitive information via the CSV Log export ... (7.5 HIGH)