MGASA-2018-0470 - Updated openssl packages fix security vulnerabilities

Publication date: 27 Nov 2018
URL: https://advisories.mageia.org/MGASA-2018-0470.html
Type: security
Affected Mageia releases: 6
CVE: CVE-2018-0734,
     CVE-2018-5407

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). (CVE-2018-0734)

Simultaneous Multi-threading (SMT) in processors can enable local usersto exploit software vulnerable to timing attacks via a side-channel
timing attack on 'port contention'. (CVE-2018-5407

References:
- https://bugs.mageia.org/show_bug.cgi?id=23870
- https://openssl-library.org/news/secadv/20181030.txt
- https://openssl-library.org/news/secadv/20181112.txt
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-0734
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5407

SRPMS:
- 6/core/openssl-1.0.2q-1.mga6

Mageia 2018-0470: openssl security update

The OpenSSL DSA signature algorithm has been shown to be vulnerable to a timing side channel attack

Summary

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). (CVE-2018-0734)
Simultaneous Multi-threading (SMT) in processors can enable local usersto exploit software vulnerable to timing attacks via a side-channel timing attack on 'port contention'. (CVE-2018-5407

References

- https://bugs.mageia.org/show_bug.cgi?id=23870

- https://openssl-library.org/news/secadv/20181030.txt

- https://openssl-library.org/news/secadv/20181112.txt

- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-0734

- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5407

Resolution

MGASA-2018-0470 - Updated openssl packages fix security vulnerabilities

SRPMS

- 6/core/openssl-1.0.2q-1.mga6

Severity
Publication date: 27 Nov 2018
URL: https://advisories.mageia.org/MGASA-2018-0470.html
Type: security
CVE: CVE-2018-0734, CVE-2018-5407

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