CVE-2018-0734

MEDIUM

Description

The OpenSSL DSA 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 1.1.1a (Affected 1.1.1). Fixed in OpenSSL 1.1.0j (Affected 1.1.0-1.1.0i). Fixed in OpenSSL 1.0.2q (Affected 1.0.2-1.0.2p).

References

http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00030.html

http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00056.html

http://www.securityfocus.com/bid/105758

https://access.redhat.com/errata/RHSA-2019:2304

https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=43e6a58d4991a451daf4891ff05a48735df871ac

https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=8abfe72e8c1de1b95f50aa0d9134803b4d00070f

https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=ef11e19d1365eea2b1851e6f540a0bf365d303e7

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

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

https://security.netapp.com/advisory/ntap-20190118-0002/

https://security.netapp.com/advisory/ntap-20190423-0002/

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

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

https://www.debian.org/security/2018/dsa-4355

https://www.openssl.org/news/secadv/20181030.txt

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

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

https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html

https://www.tenable.com/security/tns-2018-16

https://www.tenable.com/security/tns-2018-17

Details

Source: MITRE

Published: 2018-10-30

Updated: 2019-06-11

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