Vulnerabilities
Misconfiguration
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CVE Vulnerabilities

CVE-2016-5258

Use After Free

Published: Aug 05, 2016 | Modified: Apr 12, 2025
CVSS 3.x
8.8
HIGH
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.x
6.8 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P
RedHat/V2
6.8 CRITICAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
RedHat/V3
8.8 CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2016-5258
CWEhttps://cwe.mitre.org/data/definitions/416.html

Use-after-free vulnerability in the WebRTC socket thread in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows remote attackers to execute arbitrary code by leveraging incorrect free operations on DTLS objects during the shutdown of a WebRTC session.

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

NameVendorStart VersionEnd Version
LinuxOracle5.0 (including)5.0 (including)
LinuxOracle6 (including)6 (including)
LinuxOracle7 (including)7 (including)
Red Hat Enterprise Linux 5RedHatfirefox-0:45.3.0-1.el5_11*
Red Hat Enterprise Linux 6RedHatfirefox-0:45.3.0-1.el6_8*
Red Hat Enterprise Linux 7RedHatfirefox-0:45.3.0-1.el7_2*
FirefoxUbuntuprecise*
FirefoxUbuntutrusty*
FirefoxUbuntuupstream*
FirefoxUbuntuxenial*

Potential Mitigations

References

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