HOMEVULNERABILITIESCVE-2018-0735
MEDIUM

CVE-2018-0735

CWE-327Published: October 29, 2018· Updated: Jun 17, 2026

5.9
CVSS v3.1

Official Description

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).

NVD Source

Technical Analysis

CVE-2018-0735 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 5.9.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors & Products

Canonical1 product(s)
ubuntu linux
Debian1 product(s)
debian linux
netapp9 product(s)
cn1610 firmwarecn1610cloud backupelement softwareoncommand unified managersantricity smi-s providersmi-s providersnapdrivesteelstore
Node.js1 product(s)
node.js
OpenSSL1 product(s)
openssl
Oracle10 product(s)
api gatewayapplication serverenterprise manager base platformenterprise manager ops centermysqlpeoplesoft enterprise peopletoolsprimavera p6 enterprise project portfolio managementsecure global desktoptuxedovm virtualbox
Source: NVD CPE · 41 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
PATCHhttps://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
PATCHhttps://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
PATCHhttps://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
PATCHhttps://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
PATCHhttps://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
ADVISORYhttp://www.securityfocus.com/bid/105750
ADVISORYhttp://www.securitytracker.com/id/1041986
ADVISORYhttps://access.redhat.com/errata/RHSA-2019:3700
ADVISORYhttps://lists.debian.org/debian-lts-announce/2018/11/msg00024.html
ADVISORYhttps://nodejs.org/en/blog/vulnerability/november-2018-security-releases/
ADVISORYhttps://security.netapp.com/advisory/ntap-20181105-0002/
ADVISORYhttps://usn.ubuntu.com/3840-1/
ADVISORYhttps://www.debian.org/security/2018/dsa-4348
ADVISORYhttps://www.openssl.org/news/secadv/20181029.txt
ADVISORYhttps://www.oracle.com/security-alerts/cpujan2020.html
ADVISORYhttp://www.securityfocus.com/bid/105750
ADVISORYhttp://www.securitytracker.com/id/1041986
ADVISORYhttps://access.redhat.com/errata/RHSA-2019:3700
ADVISORYhttps://lists.debian.org/debian-lts-announce/2018/11/msg00024.html
ADVISORYhttps://nodejs.org/en/blog/vulnerability/november-2018-security-releases/
ADVISORYhttps://security.netapp.com/advisory/ntap-20181105-0002/
ADVISORYhttps://usn.ubuntu.com/3840-1/
ADVISORYhttps://www.debian.org/security/2018/dsa-4348
ADVISORYhttps://www.openssl.org/news/secadv/20181029.txt
ADVISORYhttps://www.oracle.com/security-alerts/cpujan2020.html

All References (30)

→
http://www.securityfocus.com/bid/105750Third Party Advisory · VDB Entry
→
http://www.securitytracker.com/id/1041986Third Party Advisory · VDB Entry
→
https://access.redhat.com/errata/RHSA-2019:3700Third Party Advisory
→
https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=56fb454d281a023b3f950d969693553d3f3ceea1
→
https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=b1d6d55ece1c26fa2829e2b819b038d7b6d692b4
→
https://lists.debian.org/debian-lts-announce/2018/11/msg00024.htmlMailing List · Third Party Advisory
→
https://nodejs.org/en/blog/vulnerability/november-2018-security-releases/Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20181105-0002/Third Party Advisory
→
https://usn.ubuntu.com/3840-1/Third Party Advisory
→
https://www.debian.org/security/2018/dsa-4348Third Party Advisory
→
https://www.openssl.org/news/secadv/20181029.txtVendor Advisory
→
https://www.oracle.com/security-alerts/cpujan2020.htmlThird Party Advisory
→
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.htmlPatch · Third Party Advisory
→
https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.htmlPatch · Third Party Advisory
→
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.htmlPatch · Third Party Advisory

Quick Facts

CVE IDCVE-2018-0735
CVSS Score5.9 / 10
SeverityMEDIUM
WeaknessCWE-327
CISA KEVNo
Affected6 vendor(s)
PublishedOct 29, 2018

Related CVEs (CWE-327)

CVE-2025-54426
9.9
CVE-2019-13022
9.8
CVE-2017-9859
9.8
CVE-2017-17717
9.8
CVE-2019-5723
9.8
CVE-2018-21058
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-0735 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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