Vulnerability Monitor

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CVE-2015-2741

Mozilla Firefox before 39.0, Firefox ESR 38.x before 38.1, and Thunderbird before 38.1 do not enforce key pinning upon encountering an X.509 certificate problem that generates a user dialog, which allows user-assisted man-in-the-middle attackers to bypass intended access restrictions by triggering a (1) expired certificate or (2) mismatched hostname for a domain with pinning enabled.

Security Impact Summary

CVE-2015-2741 is a security vulnerability that . Impacting 3 products from mozilla, from oracle, from mozilla organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2015, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2015-07-06T02:01:09.517

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	mozilla	firefox	≤ 38.1.0	Yes
Operating System	oracle	solaris	11.3	Yes
Application	mozilla	firefox	31.0	Yes
Application	mozilla	firefox	31.1.0	Yes
Application	mozilla	firefox	31.1.1	Yes
Application	mozilla	firefox	31.3.0	Yes
Application	mozilla	firefox	31.5.1	Yes
Application	mozilla	firefox	31.5.2	Yes
Application	mozilla	firefox	31.5.3	Yes
Application	mozilla	firefox	38.0	Yes
Application	mozilla	firefox_esr	31.1	Yes
Application	mozilla	firefox_esr	31.2	Yes
Application	mozilla	firefox_esr	31.3	Yes
Application	mozilla	firefox_esr	31.4	Yes
Application	mozilla	firefox_esr	31.5	Yes
Application	mozilla	firefox_esr	31.6.0	Yes
Application	mozilla	firefox_esr	31.7.0	Yes

References

http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00025.html ([email protected])
http://rhn.redhat.com/errata/RHSA-2015-1207.html ([email protected])
http://rhn.redhat.com/errata/RHSA-2015-1455.html ([email protected])
http://www.mozilla.org/security/announce/2015/mfsa2015-67.html Vendor Advisory ([email protected])
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html Third Party Advisory ([email protected])
http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html Third Party Advisory ([email protected])
http://www.securityfocus.com/bid/75541 ([email protected])
http://www.securitytracker.com/id/1032783 ([email protected])
http://www.securitytracker.com/id/1032784 ([email protected])
http://www.ubuntu.com/usn/USN-2656-1 ([email protected])
http://www.ubuntu.com/usn/USN-2656-2 ([email protected])
https://bugzilla.mozilla.org/show_bug.cgi?id=1147497 Issue Tracking, Vendor Advisory ([email protected])
https://security.gentoo.org/glsa/201512-10 ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00025.html (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2015-1207.html (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2015-1455.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.mozilla.org/security/announce/2015/mfsa2015-67.html Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/75541 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1032783 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1032784 (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-2656-1 (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-2656-2 (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.mozilla.org/show_bug.cgi?id=1147497 Issue Tracking, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/201512-10 (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For mozilla's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.