MGASA-2020-0002 - Updated python-ecdsa packages fix security vulnerabilities

Publication date: 05 Jan 2020
URL: https://advisories.mageia.org/MGASA-2020-0002.html
Type: security
Affected Mageia releases: 7
CVE: CVE-2019-14853,
     CVE-2019-14859

Updated python-ecdsa packages fix security vulnerabilities:

It was discovered that python-ecdsa incorrectly handled certain signatures.
A remote attacker could possibly use this issue to cause python-ecdsa to
generate unexpected exceptions, resulting in a denial of service
(CVE-2019-14853).

It was discovered that python-ecdsa incorrectly verified DER encoding in
signatures. A remote attacker could use this issue to perform certain
malleability attacks (CVE-2019-14859).

References:
- https://bugs.mageia.org/show_bug.cgi?id=25729
- https://ubuntu.com/security/notices/USN-4196-1
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-14853
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-14859

SRPMS:
- 7/core/python-ecdsa-0.13.3-1.mga7

Mageia 2020-0002: python-ecdsa security update

Updated python-ecdsa packages fix security vulnerabilities: It was discovered that python-ecdsa incorrectly handled certain signatures

Summary

Updated python-ecdsa packages fix security vulnerabilities:
It was discovered that python-ecdsa incorrectly handled certain signatures. A remote attacker could possibly use this issue to cause python-ecdsa to generate unexpected exceptions, resulting in a denial of service (CVE-2019-14853).
It was discovered that python-ecdsa incorrectly verified DER encoding in signatures. A remote attacker could use this issue to perform certain malleability attacks (CVE-2019-14859).

References

- https://bugs.mageia.org/show_bug.cgi?id=25729

- https://ubuntu.com/security/notices/USN-4196-1

- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-14853

- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-14859

Resolution

MGASA-2020-0002 - Updated python-ecdsa packages fix security vulnerabilities

SRPMS

- 7/core/python-ecdsa-0.13.3-1.mga7

Severity
Publication date: 05 Jan 2020
URL: https://advisories.mageia.org/MGASA-2020-0002.html
Type: security
CVE: CVE-2019-14853, CVE-2019-14859

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