Mozilla Network Security Services information disclosure

mozilla-nss-cve20131740-info-disc (90394) The risk level is classified as MediumMedium Risk

Description:

Mozilla Network Security Services could allow a remote attacker to obtain sensitive information, caused by an error in the ssl_Do1stHandshake() function. An attacker could exploit this vulnerability to return unencrypted, unauthenticated data from PR_Recv.

*CVSS:

Base Score: 5
  Access Vector: Network
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: Partial
  Integrity Impact: None
  Availability Impact: None
 
Temporal Score: 3.7
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Obtain Information

Remedy:

Upgrade to the latest version of Network Security Services (3.15.4 or later), available from the Mozilla Web site. See References.

For other distributions:
Apply the appropriate update for your system. See References.

References:

  • Mozilla Web site: NSS 3.15.4 release notes.
  • Pale Moon Web site: Release notes 24.3.0 (2014-01-28).
  • BID-64944: Network Security Services 'ssl_Do1stHandshake()' Function Information Disclosure Vulnerability
  • CVE-2013-1740: The ssl_Do1stHandshake function in sslsecur.c in libssl in Mozilla Network Security Services (NSS) before 3.15.4, when the TLS False Start feature is enabled, allows man-in-the-middle attackers to spoof SSL servers by using an arbitrary X.509 certificate during certain handshake traffic.
  • RHSA-2014-0917: Critical: nss and nspr security, bug fix, and enhancement update
  • RHSA-2014-1246: Moderate: nss and nspr security, bug fix, and enhancement update
  • SA56386: Network Security Services (NSS) False Start PR_Recv Information Disclosure Security Issue
  • SA56608: Pale Moon Information Disclosure Security Issue and Unspecified Vulnerabilities

Platforms Affected:

  • Mozilla Network Security Services 3.14.1
  • Pale Moon Pale Moon 24
  • RedHat Enterprise Linux 5 Client Workstation
  • RedHat Enterprise Linux 5 Client
  • RedHat Enterprise Linux 5
  • RedHat Enterprise Linux 6 Server
  • RedHat Enterprise Linux 6 Workstation
  • RedHat Enterprise Linux Desktop 6
  • RedHat Enterprise Linux HPC Node 6

Reported:

Jan 09, 2014

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