CVE Vulnerabilities

CVE-2017-7752

Use After Free

Published: Jun 11, 2018 | Modified: Nov 21, 2024
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
RedHat/V3
8.8 MODERATE
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Ubuntu
MEDIUM

A use-after-free vulnerability during specific user interactions with the input method editor (IME) in some languages due to how events are handled. This results in a potentially exploitable crash but would require specific user interaction to trigger. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.

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 Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.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

Name Vendor Start Version End Version
Debian_linux Debian 8.0 (including) 8.0 (including)
Debian_linux Debian 9.0 (including) 9.0 (including)
Red Hat Enterprise Linux 6 RedHat firefox-0:52.2.0-1.el6_9 *
Red Hat Enterprise Linux 6 RedHat thunderbird-0:52.2.0-1.el6_9 *
Red Hat Enterprise Linux 7 RedHat firefox-0:52.2.0-1.el7_3 *
Red Hat Enterprise Linux 7 RedHat thunderbird-0:52.2.0-1.el7_3 *
Firefox Ubuntu devel *
Firefox Ubuntu trusty *
Firefox Ubuntu upstream *
Firefox Ubuntu xenial *
Firefox Ubuntu yakkety *
Firefox Ubuntu zesty *
Thunderbird Ubuntu devel *
Thunderbird Ubuntu trusty *
Thunderbird Ubuntu upstream *
Thunderbird Ubuntu xenial *
Thunderbird Ubuntu yakkety *
Thunderbird Ubuntu zesty *

Potential Mitigations

References