Vulnerability Monitor

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CVE-2015-4486

The decrease_ref_count function in libvpx in Mozilla Firefox before 40.0 and Firefox ESR 38.x before 38.2 allows remote attackers to execute arbitrary code or cause a denial of service (out-of-bounds read) via malformed WebM video data.

Security Impact Summary

CVE-2015-4486 is a security vulnerability that . Impacting 4 products from canonical, from opensuse, from mozilla and 1 other, 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

2015-08-16T01:59:14.143

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 10.0 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

10.0

Impact Score

10.0

Weaknesses

Type: Primary
CWE-119

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	canonical	ubuntu_linux	12.04	Yes
Operating System	canonical	ubuntu_linux	14.04	Yes
Operating System	canonical	ubuntu_linux	15.04	Yes
Operating System	opensuse	opensuse	13.1	Yes
Operating System	opensuse	opensuse	13.2	Yes
Application	mozilla	firefox	≤ 39.0.3	Yes
Application	mozilla	firefox	38.0	Yes
Application	mozilla	firefox	38.0.1	Yes
Application	mozilla	firefox	38.0.5	Yes
Application	mozilla	firefox	38.1.0	Yes
Operating System	oracle	solaris	11.3	Yes

References

http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00014.html Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00015.html Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00021.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00016.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00025.html ([email protected])
http://lists.opensuse.org/opensuse-updates/2015-08/msg00030.html ([email protected])
http://lists.opensuse.org/opensuse-updates/2015-08/msg00031.html ([email protected])
http://rhn.redhat.com/errata/RHSA-2015-1586.html ([email protected])
http://www.mozilla.org/security/announce/2015/mfsa2015-89.html Vendor Advisory ([email protected])
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html Third Party Advisory ([email protected])
http://www.securitytracker.com/id/1033247 ([email protected])
http://www.ubuntu.com/usn/USN-2702-1 Third Party Advisory ([email protected])
http://www.ubuntu.com/usn/USN-2702-2 Third Party Advisory ([email protected])
http://www.ubuntu.com/usn/USN-2702-3 ([email protected])
https://bugzilla.mozilla.org/show_bug.cgi?id=1178148 Issue Tracking ([email protected])
https://security.gentoo.org/glsa/201605-06 ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00014.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00015.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00021.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00016.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00025.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-updates/2015-08/msg00030.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-updates/2015-08/msg00031.html (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2015-1586.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.mozilla.org/security/announce/2015/mfsa2015-89.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.securitytracker.com/id/1033247 (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-2702-1 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-2702-2 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-2702-3 (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.mozilla.org/show_bug.cgi?id=1178148 Issue Tracking (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/201605-06 (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 canonical'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.