CVE-2018-0735

MEDIUM

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).

References

http://www.securityfocus.com/bid/105750

http://www.securitytracker.com/id/1041986

https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=56fb454d281a023b3f950d969693553d3f3ceea1

https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=b1d6d55ece1c26fa2829e2b819b038d7b6d692b4

https://lists.debian.org/debian-lts-announce/2018/11/msg00024.html

https://nodejs.org/en/blog/vulnerability/november-2018-security-releases/

https://security.netapp.com/advisory/ntap-20181105-0002/

https://usn.ubuntu.com/3840-1/

https://www.debian.org/security/2018/dsa-4348

https://www.openssl.org/news/secadv/20181029.txt

https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html

https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html

Details

Source: MITRE

Published: 2018-10-29

Updated: 2019-05-10

Type: CWE-320

Risk Information

CVSS v2.0

Base Score: 4.3

Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3.0

Base Score: 5.9

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Impact Score: 3.6

Exploitability Score: 2.2

Severity: MEDIUM