Medium [CVE-2018-0735] Timing attack against ECDSA signature generation
This medium-severity Red Hat Linux advisory covers CVE-2018-0735 affecting Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 6.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
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Summary
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). Red Hat severity: Low — CVSS 5.1 (CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N).
Weakness: CWE-385. Affected Red Hat products: Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 6.
Will not fix / out of support: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Red Hat fixing advisory: RHSA-2019:0483, RHSA-2019:3700.
Affected products named by the advisory: Red Hat package: openssl; Red Hat package: ovmf.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 6 days ago·verify at source
- 1.1.0-1
- 1.1.1
- openssl-1:1.0.2k-16.el7_6.1
- openssl-1:1.1.1c-2.el8
- RHSA-2019:0483
- RHSA-2019:3700
Official advisory · high-confidence parse· fetched 6 days ago·verify at source
Mitigation
Upgrade to a fixed release: 1.1.0-1, 1.1.1, openssl-1:1.0.2k-16.el7_6.1, openssl-1:1.1.1c-2.el8, RHSA-2019:0483, RHSA-2019:3700. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 6 days ago·verify at source
Discussion(0)
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