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TI-2018-00683 Aliases CVE-2018-0735GHSA-4fhm-44hf-3465

Timing attack against ECDSA signature generation

Priority MEDIUM 40CWE-327Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Partial Red Hat: 11 fixed, 2 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-327.

Summary

The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a timing side channel attack. An attacker could use variations in the signing algorithm to recover the private key. Fixed in OpenSSL 1.1.0j (Affected 1.1.0-1.1.0i). Fixed in OpenSSL 1.1.1a (Affected 1.1.1).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.04724 91st percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 11 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OpenSSLOpenSSLFixed in OpenSSL 1.1.0j (Affected 1.1.0-1.1.0i); Fixed in OpenSSL 1.1.1a (Affected 1.1.1)—No fix listedCNA
  • OpenSSL VendorOpenSSL Affected Fixed in OpenSSL 1.1.0j (Affected 1.1.0-1.1.0i); Fixed in OpenSSL 1.1.1a (Affected 1.1.1) Fixed in — No fix listed CNA

CPE configurations NVD · 43

CPEVersionsRoleVendor
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*1.1.0 – 1.1.0iVulnerableOpenSSL
cpe:2.3:a:openssl:openssl:1.1.1:*:*:*:*:*:*:*1.1.1VulnerableOpenSSL
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*14.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*16.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*18.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*18.10VulnerableCanonical
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*10.0.0 to before 10.12.0; 11.0.0 to before 11.3.0VulnerableNodeJS
cpe:2.3:a:nodejs:node.js:10.13.0:*:*:*:lts:*:*:*10.13.0VulnerableNodeJS
  • cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* Versions 1.1.0 – 1.1.0i Vulnerable ·OpenSSL
  • cpe:2.3:a:openssl:openssl:1.1.1:*:*:*:*:*:*:* Versions 1.1.1 Vulnerable ·OpenSSL
  • cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* Versions 18.10 Vulnerable ·Canonical
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:* Versions 10.0.0 to before 10.12.0; 11.0.0 to before 11.3.0 Vulnerable ·NodeJS
  • cpe:2.3:a:nodejs:node.js:10.13.0:*:*:*:lts:*:*:* Versions 10.13.0 Vulnerable ·NodeJS
Show 33 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:netapp:cn1610_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:cn1610:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:a:netapp:element_software:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:a:netapp:oncommand_unified_manager:*:*:*:*:*:*:*:*all versionsVulnerableNetApp
cpe:2.3:a:netapp:oncommand_unified_manager:*:*:*:*:*:vsphere:*:*9.4VulnerableNetApp
cpe:2.3:a:netapp:santricity_smi-s_provider:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:a:netapp:smi-s_provider:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:a:netapp:snapdrive:-:*:*:*:*:unix:*:*not specified by NVDVulnerableNetApp
cpe:2.3:a:netapp:snapdrive:-:*:*:*:*:windows:*:*not specified by NVDVulnerableNetApp
cpe:2.3:a:netapp:steelstore:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:a:oracle:api_gateway:11.1.2.4.0:*:*:*:*:*:*:*11.1.2.4.0VulnerableOracle
cpe:2.3:a:oracle:application_server:0.9.8:*:*:*:*:*:*:*0.9.8VulnerableOracle
cpe:2.3:a:oracle:application_server:1.0.0:*:*:*:*:*:*:*1.0.0VulnerableOracle
cpe:2.3:a:oracle:application_server:1.0.1:*:*:*:*:*:*:*1.0.1VulnerableOracle
cpe:2.3:a:oracle:enterprise_manager_base_platform:12.1.0.5.0:*:*:*:*:*:*:*12.1.0.5.0VulnerableOracle
cpe:2.3:a:oracle:enterprise_manager_base_platform:13.2.0.0.0:*:*:*:*:*:*:*13.2.0.0.0VulnerableOracle
cpe:2.3:a:oracle:enterprise_manager_base_platform:13.3.0.0.0:*:*:*:*:*:*:*13.3.0.0.0VulnerableOracle
cpe:2.3:a:oracle:enterprise_manager_ops_center:12.3.3:*:*:*:*:*:*:*12.3.3VulnerableOracle
cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:*up to 5.6.42; 5.7.0 – 5.7.24; 8.0.0 – 8.0.13VulnerableOracle
cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.55:*:*:*:*:*:*:*8.55VulnerableOracle
cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.56:*:*:*:*:*:*:*8.56VulnerableOracle
cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.57:*:*:*:*:*:*:*8.57VulnerableOracle
cpe:2.3:a:oracle:primavera_p6_enterprise_project_portfolio_management:*:*:*:*:*:*:*:*17.7 – 17.12VulnerableOracle
cpe:2.3:a:oracle:primavera_p6_enterprise_project_portfolio_management:8.4:*:*:*:*:*:*:*8.4VulnerableOracle
cpe:2.3:a:oracle:primavera_p6_enterprise_project_portfolio_management:15.1:*:*:*:*:*:*:*15.1VulnerableOracle
cpe:2.3:a:oracle:primavera_p6_enterprise_project_portfolio_management:15.2:*:*:*:*:*:*:*15.2VulnerableOracle
cpe:2.3:a:oracle:primavera_p6_enterprise_project_portfolio_management:16.1:*:*:*:*:*:*:*16.1VulnerableOracle
cpe:2.3:a:oracle:primavera_p6_enterprise_project_portfolio_management:16.2:*:*:*:*:*:*:*16.2VulnerableOracle
cpe:2.3:a:oracle:primavera_p6_enterprise_project_portfolio_management:18.8:*:*:*:*:*:*:*18.8VulnerableOracle
cpe:2.3:a:oracle:secure_global_desktop:5.4:*:*:*:*:*:*:*5.4VulnerableOracle
cpe:2.3:a:oracle:tuxedo:12.1.1.0.0:*:*:*:*:*:*:*12.1.1.0.0VulnerableOracle
cpe:2.3:a:oracle:vm_virtualbox:*:*:*:*:*:*:*:*before 6.0.0; 5.0.0 to before 5.2.24VulnerableOracle
  • cpe:2.3:o:netapp:cn1610_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:cn1610:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
  • cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:a:netapp:element_software:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:a:netapp:oncommand_unified_manager:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·NetApp
  • cpe:2.3:a:netapp:oncommand_unified_manager:*:*:*:*:*:vsphere:*:* Versions 9.4 Vulnerable ·NetApp
  • cpe:2.3:a:netapp:santricity_smi-s_provider:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:a:netapp:smi-s_provider:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:a:netapp:snapdrive:-:*:*:*:*:unix:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:a:netapp:snapdrive:-:*:*:*:*:windows:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:a:netapp:steelstore:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:a:oracle:api_gateway:11.1.2.4.0:*:*:*:*:*:*:* Versions 11.1.2.4.0 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:application_server:0.9.8:*:*:*:*:*:*:* Versions 0.9.8 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:application_server:1.0.0:*:*:*:*:*:*:* Versions 1.0.0 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:application_server:1.0.1:*:*:*:*:*:*:* Versions 1.0.1 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:enterprise_manager_base_platform:12.1.0.5.0:*:*:*:*:*:*:* Versions 12.1.0.5.0 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:enterprise_manager_base_platform:13.2.0.0.0:*:*:*:*:*:*:* Versions 13.2.0.0.0 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:enterprise_manager_base_platform:13.3.0.0.0:*:*:*:*:*:*:* Versions 13.3.0.0.0 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:enterprise_manager_ops_center:12.3.3:*:*:*:*:*:*:* Versions 12.3.3 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:* Versions up to 5.6.42; 5.7.0 – 5.7.24; 8.0.0 – 8.0.13 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.55:*:*:*:*:*:*:* Versions 8.55 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.56:*:*:*:*:*:*:* Versions 8.56 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.57:*:*:*:*:*:*:* Versions 8.57 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:primavera_p6_enterprise_project_portfolio_management:*:*:*:*:*:*:*:* Versions 17.7 – 17.12 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:primavera_p6_enterprise_project_portfolio_management:8.4:*:*:*:*:*:*:* Versions 8.4 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:primavera_p6_enterprise_project_portfolio_management:15.1:*:*:*:*:*:*:* Versions 15.1 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:primavera_p6_enterprise_project_portfolio_management:15.2:*:*:*:*:*:*:* Versions 15.2 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:primavera_p6_enterprise_project_portfolio_management:16.1:*:*:*:*:*:*:* Versions 16.1 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:primavera_p6_enterprise_project_portfolio_management:16.2:*:*:*:*:*:*:* Versions 16.2 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:primavera_p6_enterprise_project_portfolio_management:18.8:*:*:*:*:*:*:* Versions 18.8 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:secure_global_desktop:5.4:*:*:*:*:*:*:* Versions 5.4 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:tuxedo:12.1.1.0.0:*:*:*:*:*:*:* Versions 12.1.1.0.0 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:vm_virtualbox:*:*:*:*:*:*:*:* Versions before 6.0.0; 5.0.0 to before 5.2.24 Vulnerable ·Oracle

Remediation

Red Hat 2 advisories

  • RHSA-2019:3700 Released 2019-11-05 · Red Hat rating Low
    openssl security, bug fix, and enhancement update
    • Red Hat Enterprise Linux BaseOS (v. 8) openssl-1:1.1.1c-2.el8, openssl-devel-1:1.1.1c-2.el8, openssl-libs-1:1.1.1c-2.el8 +1
  • RHSA-2019:0483 Released 2019-03-13 · Red Hat rating Moderate
    openssl security and bug fix update
    • Red Hat Enterprise Linux Client (v. 7) openssl-1:1.0.2k-16.el7_6.1, openssl-libs-1:1.0.2k-16.el7_6.1
    • Red Hat Enterprise Linux Client Optional (v. 7) openssl-devel-1:1.0.2k-16.el7_6.1, openssl-perl-1:1.0.2k-16.el7_6.1, openssl-static-1:1.0.2k-16.el7_6.1
    • Red Hat Enterprise Linux ComputeNode (v. 7) openssl-1:1.0.2k-16.el7_6.1, openssl-libs-1:1.0.2k-16.el7_6.1
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) openssl-devel-1:1.0.2k-16.el7_6.1, openssl-perl-1:1.0.2k-16.el7_6.1, openssl-static-1:1.0.2k-16.el7_6.1
    • Red Hat Enterprise Linux Server (v. 7) openssl-1:1.0.2k-16.el7_6.1, openssl-devel-1:1.0.2k-16.el7_6.1, openssl-devel-1:1.0.2k-16.el7_6.1.ppc +2
    • Red Hat Enterprise Linux Server Optional (v. 7) openssl-perl-1:1.0.2k-16.el7_6.1, openssl-static-1:1.0.2k-16.el7_6.1, openssl-static-1:1.0.2k-16.el7_6.1.ppc
    • Red Hat Enterprise Linux Workstation (v. 7) openssl-1:1.0.2k-16.el7_6.1, openssl-devel-1:1.0.2k-16.el7_6.1, openssl-libs-1:1.0.2k-16.el7_6.1
    • Red Hat Enterprise Linux Workstation Optional (v. 7) openssl-perl-1:1.0.2k-16.el7_6.1, openssl-static-1:1.0.2k-16.el7_6.1
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) openssl-1:1.0.2k-16.el7_6.1, openssl-devel-1:1.0.2k-16.el7_6.1, openssl-libs-1:1.0.2k-16.el7_6.1
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) openssl-perl-1:1.0.2k-16.el7_6.1, openssl-static-1:1.0.2k-16.el7_6.1

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux 7AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2019:3700
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2019:0483
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2019:0483
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2019:0483
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2019:0483
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2019:0483
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2019:0483
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2019:0483
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2019:0483
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)Fixed RHSA-2019:0483
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7)Fixed RHSA-2019:0483
Not affected: 10 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat JBoss Core Services
  • Red Hat JBoss Enterprise Application Platform 5
  • Red Hat JBoss Enterprise Application Platform 6
  • Red Hat JBoss Enterprise Web Server 2
  • Red Hat JBoss Web Server 3
  • Red Hat OpenShift Enterprise 3

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-0735
  2. 2026-10-03 Alias added: GHSA-4fhm-44hf-3465
  3. 2026-10-08 CISA SSVC decision points changed
  4. 2026-10-09 Priority changed: LOW → MEDIUM

References

Patch 3

Advisory 8

Other 2

  • TI-2022-01915 The c_rehash script allows command injection CVSS 3.1CRITICAL 9.8
  • TI-2021-02645 SM2 Decryption Buffer Overflow CVSS 3.1CRITICAL 9.8
  • TI-2009-03392 The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft… CVSS 3.1CRITICAL 9.8
  • TI-2022-01176 The c_rehash script allows command injection CVSS 3.1CRITICAL 9.8
  • TI-2014-00154 The (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly… KEVCVSS 3.1HIGH 7.5
  • TI-2025-14107 Stack buffer overflow in CMS (Auth)EnvelopedData parsing CVSS 3.1HIGH 8.8
See all 312 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences