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Improperly Implemented Security Check for Standard Affecting nss package, versions <0:3.19.1-3.el6_6

Severity

 Recommended
0.0
medium
0
10

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.14% (50th percentile)

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  • Snyk ID SNYK-CENTOS6-NSS-2115471
  • published 26 Jul 2021
  • disclosed 2 Jul 2015
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Introduced: 2 Jul 2015

CVE-2015-2721 Open this link in a new tab
CWE-358 Open this link in a new tab

How to fix?

Upgrade Centos:6 nss to version 0:3.19.1-3.el6_6 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 Centos. See How to fix? for Centos:6 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
Expand this section

NVD

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

Red Hat

5.6 medium