Timing attack against ECDSA signature generation
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).
- Published
- Oct 29, 2018
- Updated
- Jun 16, 2026
- EPSS
- 4.7% · 92th percentile
- CWE
- CWE-327
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Report tools
Action score
24
Monitor
Low priority for now.
- CVSS
- 23 / 40 · 5.9 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 4.7%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| openssl | openssl | cpe:2.3:a:openssl:openssl |
| canonical | ubuntu linux | cpe:2.3:o:canonical:ubuntu_linux |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
| nodejs | node.js | cpe:2.3:a:nodejs:node.js |
| netapp | cn1610 firmware | cpe:2.3:o:netapp:cn1610_firmware |
| netapp | cn1610 | cpe:2.3:h:netapp:cn1610 |
| netapp | cloud backup | cpe:2.3:a:netapp:cloud_backup |
| netapp | element software | cpe:2.3:a:netapp:element_software |
| netapp | oncommand unified manager | cpe:2.3:a:netapp:oncommand_unified_manager |
| netapp | santricity smi-s provider | cpe:2.3:a:netapp:santricity_smi-s_provider |
| netapp | smi-s provider | cpe:2.3:a:netapp:smi-s_provider |
| netapp | snapdrive | cpe:2.3:a:netapp:snapdrive |
and 11 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- nodejs node.js10.0.0 and later · before 10.12.0
- nodejs node.js11.0.0 and later · before 11.3.0
- nodejs node.js10.13.0
- oracle mysqlup to 5.6.42 inclusive
- oracle mysql5.7.0 and later · up to 5.7.24 inclusive
- oracle mysql8.0.0 and later · up to 8.0.13 inclusive
Versions reported by the vendor
Affected version ranges reported by the assigning authority (openssl). Independent of NVD's CPE analysis and usually ahead of it.
OpenSSL OpenSSL
- Fixed in OpenSSL 1.1.0j (Affected 1.1.0-1.1.0i), Fixed in OpenSSL 1.1.1a (Affected 1.1.1)affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Alpine:v3.10 | nodejs | before 10.14.0-r0 | 10.14.0-r0 |
| Alpine:v3.10 | openssl | from 1.1.0 · before 1.1.1a-r0 | 1.1.1a-r0 |
| Alpine:v3.15 | openssl3 | before 1.1.1a-r0 | 1.1.1a-r0 |
| Debian:12 | openssl | before 1.1.1a-1 | 1.1.1a-1 |
| Debian:8 | openssl | before 1.0.1t-1+deb8u10 | 1.0.1t-1+deb8u10 |
| Debian:9 | openssl | before 1.1.0j-1~deb9u1 | 1.1.0j-1~deb9u1 |
| Red Hat:enterprise_linux:7::client | openssl | before 1:1.0.2k-16.el7_6.1 | 1:1.0.2k-16.el7_6.1 |
| Red Hat:enterprise_linux:7::client | openssl-debuginfo | before 1:1.0.2k-16.el7_6.1 | 1:1.0.2k-16.el7_6.1 |
| Red Hat:enterprise_linux:7::client | openssl-devel | before 1:1.0.2k-16.el7_6.1 | 1:1.0.2k-16.el7_6.1 |
| Red Hat:enterprise_linux:7::client | openssl-libs | before 1:1.0.2k-16.el7_6.1 | 1:1.0.2k-16.el7_6.1 |
| Red Hat:enterprise_linux:7::client | openssl-perl | before 1:1.0.2k-16.el7_6.1 | 1:1.0.2k-16.el7_6.1 |
| Red Hat:enterprise_linux:7::client | openssl-static | before 1:1.0.2k-16.el7_6.1 | 1:1.0.2k-16.el7_6.1 |
| Red Hat:enterprise_linux:8::baseos | openssl | before 1:1.1.1c-2.el8 | 1:1.1.1c-2.el8 |
| Red Hat:enterprise_linux:8::baseos | openssl-debuginfo | before 1:1.1.1c-2.el8 | 1:1.1.1c-2.el8 |
| Red Hat:enterprise_linux:8::baseos | openssl-debugsource | before 1:1.1.1c-2.el8 | 1:1.1.1c-2.el8 |
| Red Hat:enterprise_linux:8::baseos | openssl-devel | before 1:1.1.1c-2.el8 | 1:1.1.1c-2.el8 |
| Red Hat:enterprise_linux:8::baseos | openssl-libs | before 1:1.1.1c-2.el8 | 1:1.1.1c-2.el8 |
| Red Hat:enterprise_linux:8::baseos | openssl-libs-debuginfo | before 1:1.1.1c-2.el8 | 1:1.1.1c-2.el8 |
| Red Hat:enterprise_linux:8::baseos | openssl-perl | before 1:1.1.1c-2.el8 | 1:1.1.1c-2.el8 |
| SUSE:Linux Enterprise Desktop 12 SP4 | openssl-1_1 | before 1.1.1-2.3.1 | 1.1.1-2.3.1 |
| SUSE:Linux Enterprise Module for Basesystem 15 | openssl-1_1 | before 1.1.0i-4.15.1 | 1.1.0i-4.15.1 |
Same product
openssl: all recordsOther highest-scoring records for the same primary product.
- CVE-2014-0160The (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly handle Heartbeat Extension packets, which allows remKEV90Now
- CVE-2021-3711SM2 Decryption Buffer Overflow65This week
- CVE-2003-0545Double free vulnerability in OpenSSL 0.9.7 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code 65This week
- CVE-2016-2108The ASN.1 implementation in OpenSSL before 1.0.1o and 1.0.2 before 1.0.2c allows remote attackers to execute arbitrary code or cause a denia62This week
- CVE-2016-6309statem/statem.c in OpenSSL 1.1.0a does not consider memory-block movement after a realloc call, which allows remote attackers to cause a den60This week
- CVE-2022-3786X.509 Email Address Variable Length Buffer Overflow58Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| alpine:nodejs | 10.14.0-r0 · Alpine:v3.10 | Package registry (OSV) |
| alpine:openssl | 1.1.1a-r0 · Alpine:v3.10 | Package registry (OSV) |
| alpine:openssl3 | 1.1.1a-r0 · Alpine:v3.15 | Package registry (OSV) |
| debian:openssl | 1.1.1a-1 · Debian:12 | Package registry (OSV) |
| red hat:openssl | 1:1.0.2k-16.el7_6.1 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:openssl-debuginfo | 1:1.0.2k-16.el7_6.1 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:openssl-debugsource | 1:1.1.1c-2.el8 · Red Hat:enterprise_linux:8::baseos | Package registry (OSV) |
| red hat:openssl-devel | 1:1.0.2k-16.el7_6.1 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:openssl-libs | 1:1.0.2k-16.el7_6.1 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:openssl-libs-debuginfo | 1:1.1.1c-2.el8 · Red Hat:enterprise_linux:8::baseos | Package registry (OSV) |
| red hat:openssl-perl | 1:1.0.2k-16.el7_6.1 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:openssl-static | 1:1.0.2k-16.el7_6.1 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| suse:openssl-1_1 | 1.1.0i-4.15.1 · SUSE:Linux Enterprise Module for Basesystem 15 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- high · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-327 · Use of a Broken or Risky Cryptographic AlgorithmCVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Encryption Brute ForcingCAPEC-20likelihood: Low · Low
- Creating a Rogue Certification Authority CertificateCAPEC-459likelihood: Medium · Very High
- Signature SpoofCAPEC-473
- Signature Spoofing by Improper ValidationCAPEC-475likelihood: Low · High
- Cryptanalysis of Cellular EncryptionCAPEC-608High
- Rooting SIM CardsCAPEC-614High
- CryptanalysisCAPEC-97likelihood: Low · Very High
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- www.securityfocus.com/bid/105750
- www.securitytracker.com/id/1041986
- access.redhat.com/errata/RHSA-2019:3700
- git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=56fb454d281a023b3f950d969693553d3f3ceea1
- git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=b1d6d55ece1c26fa2829e2b819b038d7b6d692b4
- lists.debian.org/debian-lts-announce/2018/11/msg00024.html
- nodejs.org/en/blog/vulnerability/november-2018-security-releases/
- security.netapp.com/advisory/ntap-20181105-0002/
- usn.ubuntu.com/3840-1/
- www.debian.org/security/2018/dsa-4348
- www.openssl.org/news/secadv/20181029.txt
- www.oracle.com/security-alerts/cpujan2020.html
- www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
- www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
- www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.