Vulnerability Monitor

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CVE-2015-2721

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.

Published

2015-07-06T02:00:49.283

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 4.3 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:P/A:N

  • Access Vector: NETWORK
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: PARTIAL
  • Availability Impact: NONE
Exploitability Score

8.6

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-310
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application novell suse_linux_enterprise_software_development_kit 12.0 Yes
Operating System canonical ubuntu_linux 12.04 Yes
Operating System canonical ubuntu_linux 14.04 Yes
Operating System canonical ubuntu_linux 14.10 Yes
Operating System canonical ubuntu_linux 15.04 Yes
Operating System debian debian_linux 7.0 Yes
Operating System debian debian_linux 8.0 Yes
Operating System novell suse_linux_enterprise_desktop 12.0 Yes
Operating System novell suse_linux_enterprise_server 11 Yes
Operating System novell suse_linux_enterprise_server 12.0 Yes
Application mozilla network_security_services 3.19 Yes
Application mozilla firefox ≤ 38.1.0 No
Application mozilla firefox 31.0 No
Application mozilla firefox 31.1.0 No
Application mozilla firefox 31.1.1 No
Application mozilla firefox 31.3.0 No
Application mozilla firefox 31.5.1 No
Application mozilla firefox 31.5.2 No
Application mozilla firefox 31.5.3 No
Application mozilla firefox 38.0 No
Application mozilla firefox_esr 31.1 No
Application mozilla firefox_esr 31.2 No
Application mozilla firefox_esr 31.3 No
Application mozilla firefox_esr 31.4 No
Application mozilla firefox_esr 31.5 No
Application mozilla firefox_esr 31.6.0 No
Application mozilla firefox_esr 31.7.0 No
Application mozilla thunderbird ≤ 38.0.1 No
Operating System oracle solaris 11.3 Yes
Operating System oracle vm_server 3.2 Yes
References