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Cryptographic Issues Affecting nss package, versions <2:3.17.2-1.1+deb8u1

Severity

0.0
medium
0
10

    Threat Intelligence

    EPSS
    0.14% (50th percentile)

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  • Snyk ID SNYK-DEBIAN8-NSS-421168
  • published 6 Jul 2015
  • disclosed 6 Jul 2015
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Introduced: 6 Jul 2015

CVE-2015-2721 Open this link in a new tab
CWE-310 Open this link in a new tab

How to fix?

Upgrade Debian:8 nss to version 2:3.17.2-1.1+deb8u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nss package and not the nss package as distributed by Debian. See How to fix? for Debian:8 relevant fixed versions and status.

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.

References

CVSS Scores

version 3.1
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Snyk

4.3 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    Required
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    Low
  • Availability (A)
    None
Expand this section

NVD

4.3 medium
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Red Hat

5.6 medium