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Use After Free Affecting firefox-esr package, versions <52.3.0esr-1~deb8u2

Severity

 Recommended
0.0
critical
0
10

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Threat Intelligence

EPSS
0.77% (82nd percentile)

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  • Snyk IDSNYK-DEBIAN8-FIREFOXESR-354717
  • published11 Jun 2018
  • disclosed11 Jun 2018
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Introduced: 11 Jun 2018

CVE-2017-7800  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Debian:8 firefox-esr to version 52.3.0esr-1~deb8u2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox-esr package and not the firefox-esr package as distributed by Debian. See How to fix? for Debian:8 relevant fixed versions and status.

A use-after-free vulnerability can occur in WebSockets when the object holding the connection is freed before the disconnection operation is finished. This results in an exploitable crash. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.