CVE-2018-0495
ROHNP: Key Extraction Side Channel in Multiple Crypto Libraries
Severity Score
4.7
*CVSS v3
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
1
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 allows a memory-cache side-channel attack on ECDSA signatures that can be mitigated through the use of blinding during the signing process in the _gcry_ecc_ecdsa_sign function in cipher/ecc-ecdsa.c, 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.
Libgcrypt en versiones anteriores a la 1.7.10 y versiones 1.8.x anteriores a la 1.8.3 permite un ataque de canal lateral por caché de memoria en las firmas ECDSA que se puede mitigar mediante el uso de la ocultación durante el proceso de firmado en la función _gcry_ecc_ecdsa_sign en cipher/ecc-ecdsa.c. Esto también se conoce como Return Of the Hidden Number Problem o ROHNP. Para descubrir una clave ECDSA, el atacante necesita acceso a la máquina local o a una máquina virtual diferente en el mismo host físico.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2017-11-27 CVE Reserved
- 2018-06-13 CVE Published
- 2023-06-07 EPSS Updated
- 2024-08-05 CVE Updated
- 2024-08-05 First Exploit
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
- CWE-203: Observable Discrepancy
CAPEC
References (23)
| URL | Tag | Source |
|---|---|---|
| http://www.securitytracker.com/id/1041144 | Third Party Advisory | |
| http://www.securitytracker.com/id/1041147 | Third Party Advisory | |
| https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=9010d1576e278a4274ad3f4aa15776c28f6ba965 | X_refsource_misc | |
| https://lists.debian.org/debian-lts-announce/2018/06/msg00013.html | Mailing List |
|
| URL | Date | SRC |
|---|---|---|
| https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem | 2024-08-05 |
| URL | Date | SRC |
|---|---|---|
| https://dev.gnupg.org/T4011 | 2023-11-07 | |
| https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html | 2023-11-07 |
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/errata/RHSA-2018:3221 | 2023-11-07 | |
| https://access.redhat.com/errata/RHSA-2018:3505 | 2023-11-07 | |
| https://access.redhat.com/errata/RHSA-2019:1296 | 2023-11-07 | |
| https://access.redhat.com/errata/RHSA-2019:1297 | 2023-11-07 | |
| https://access.redhat.com/errata/RHSA-2019:1543 | 2023-11-07 | |
| https://access.redhat.com/errata/RHSA-2019:2237 | 2023-11-07 | |
| https://lists.gnupg.org/pipermail/gnupg-announce/2018q2/000426.html | 2023-11-07 | |
| https://usn.ubuntu.com/3689-1 | 2023-11-07 | |
| https://usn.ubuntu.com/3689-2 | 2023-11-07 | |
| https://usn.ubuntu.com/3692-1 | 2023-11-07 | |
| https://usn.ubuntu.com/3692-2 | 2023-11-07 | |
| https://usn.ubuntu.com/3850-1 | 2023-11-07 | |
| https://usn.ubuntu.com/3850-2 | 2023-11-07 | |
| https://www.debian.org/security/2018/dsa-4231 | 2023-11-07 | |
| https://access.redhat.com/security/cve/CVE-2018-0495 | 2020-04-14 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1591163 | 2020-04-14 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Gnupg Search vendor "Gnupg" | Libgcrypt Search vendor "Gnupg" for product "Libgcrypt" | < 1.7.10 Search vendor "Gnupg" for product "Libgcrypt" and version " < 1.7.10" | - |
Affected
| ||||||
| Gnupg Search vendor "Gnupg" | Libgcrypt Search vendor "Gnupg" for product "Libgcrypt" | >= 1.8.0 < 1.8.3 Search vendor "Gnupg" for product "Libgcrypt" and version " >= 1.8.0 < 1.8.3" | - |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 12.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04" | esm |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04" | lts |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04" | lts |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 17.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "17.10" | - |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04" | lts |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 18.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.10" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Ansible Tower Search vendor "Redhat" for product "Ansible Tower" | 3.3 Search vendor "Redhat" for product "Ansible Tower" and version "3.3" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Desktop Search vendor "Redhat" for product "Enterprise Linux Desktop" | 7.0 Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "7.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server" | 7.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "7.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation" | 7.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "7.0" | - |
Affected
| ||||||
| Oracle Search vendor "Oracle" | Traffic Director Search vendor "Oracle" for product "Traffic Director" | 11.1.1.9.0 Search vendor "Oracle" for product "Traffic Director" and version "11.1.1.9.0" | - |
Affected
| ||||||