CVE-2018-0734 - CVE House
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Status published Medium CVE-2018-0734

Timing attack against DSA

Vulnerability 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).

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Samuel Weiser

References

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Affected Vendor

Affected Software

OpenSSL
Vulnerable Versions:
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)

Timeline

Official Publish: October 30th, 2018
Last Modified: September 16th, 2024
Added to House: July 20th, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.