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CVE-2015-2721

CVE-2015-2721

This page contains facts from public vulnerability sources. Check the original advisory before updating.

This page shows selected source facts. See the linked advisories for the complete description and affected versions.

Mozilla Network Security Services (NSS) before 3.19, as used in Mozilla Firefox before 39.0, Firefox ESR 31.x before 31.8 and 38.x before 38.1, Thunderbird before 38.1, and other products, does not properly determine state transitions for the TLS state machine, which allows man-in-the-middle attackers to defeat cryptographic protection mechanisms by blocking messages, as demonstrated by removing a forward-secrecy property by blocking a ServerKeyExchange message, aka a "SMACK SKIP-TLS" issue.

EPSS 2.8% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • n/a

    Versions
    • n/a: Affected

    No fix published

  • nss Debian:12

    Affected ranges
    • ECOSYSTEM: < 2:3.19.1-1

    Update to 2:3.19.1-1

  • nss Debian:13

    Affected ranges
    • ECOSYSTEM: < 2:3.19.1-1

    Update to 2:3.19.1-1

  • nss Debian:14

    Affected ranges
    • ECOSYSTEM: < 2:3.19.1-1

    Update to 2:3.19.1-1

  • firefox Ubuntu:14.04:LTS

    Versions
    • 24.0+build1-0ubuntu1
    • 25.0+build3-0ubuntu0.13.10.1
    • 28.0~b2+build1-0ubuntu2
    • 28.0+build1-0ubuntu1
    • 28.0+build2-0ubuntu1
    • 28.0+build2-0ubuntu2
    • 29.0+build1-0ubuntu0.14.04.2
    • 30.0+build1-0ubuntu0.14.04.3
    • 31.0+build1-0ubuntu0.14.04.1
    • 32.0+build1-0ubuntu0.14.04.1
    • 32.0.3+build1-0ubuntu0.14.04.1
    • 33.0+build2-0ubuntu0.14.04.1
    • 34.0+build2-0ubuntu0.14.04.1
    • 35.0+build3-0ubuntu0.14.04.2
    • 35.0.1+build1-0ubuntu0.14.04.1
    • 36.0+build2-0ubuntu0.14.04.4
    • 36.0.1+build2-0ubuntu0.14.04.1
    • 36.0.4+build1-0ubuntu0.14.04.1
    • 37.0+build2-0ubuntu0.14.04.1
    • 37.0.1+build1-0ubuntu0.14.04.1
    • 37.0.2+build1-0ubuntu0.14.04.1
    • 38.0+build3-0ubuntu0.14.04.1
    Affected ranges
    • ECOSYSTEM: < 39.0+build5-0ubuntu0.14.04.1

    Update to 39.0+build5-0ubuntu0.14.04.1

  • nss Ubuntu:14.04:LTS

    Versions
    • 2:3.15.1-1ubuntu1
    • 2:3.15.2-1
    • 2:3.15.3-1
    • 2:3.15.3.1-1
    • 2:3.15.3.1-1.1
    • 2:3.15.3.1-1.1ubuntu1
    • 2:3.15.4-1ubuntu3
    • 2:3.15.4-1ubuntu4
    • 2:3.15.4-1ubuntu5
    • 2:3.15.4-1ubuntu6
    • 2:3.15.4-1ubuntu7
    • 2:3.15.4-1ubuntu7.1
    • 2:3.17-0ubuntu0.14.04.1
    • 2:3.17.1-0ubuntu0.14.04.1
    • 2:3.17.1-0ubuntu0.14.04.2
    • 2:3.17.4-0ubuntu0.14.04.1
    Affected ranges
    • ECOSYSTEM: < 2:3.19.2-0ubuntu0.14.04.1

    Update to 2:3.19.2-0ubuntu0.14.04.1

  • thunderbird Ubuntu:14.04:LTS

    Versions
    • 1:24.0+build1-0ubuntu1
    • 1:24.0+build1-0ubuntu2
    • 1:24.1.1+build1-0ubuntu0.13.10.1
    • 1:24.1.1+build1-0ubuntu1
    • 1:24.2.0+build1-0ubuntu1
    • 1:24.4.0+build1-0ubuntu1
    • 1:24.5.0+build1-0ubuntu0.14.04.1
    • 1:24.6.0+build1-0ubuntu0.14.04.1
    • 1:31.0+build1-0ubuntu0.14.04.1
    • 1:31.1.1+build1-0ubuntu0.14.04.1
    • 1:31.1.2+build1-0ubuntu0.14.04.1
    • 1:31.2.0+build2-0ubuntu0.14.04.1
    • 1:31.3.0+build1-0ubuntu0.14.04.1
    • 1:31.4.0+build1-0ubuntu0.14.04.1
    • 1:31.5.0+build1-0ubuntu0.14.04.1
    • 1:31.6.0+build1-0ubuntu0.14.04.1
    • 1:31.7.0+build1-0ubuntu0.14.04.1
    Affected ranges
    • ECOSYSTEM: < 1:31.8.0+build1-0ubuntu0.14.04.1

    Update to 1:31.8.0+build1-0ubuntu0.14.04.1

Original sources

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