Use After Free Affecting firefox-esr package, versions <52.4.0esr-2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIANUNSTABLE-FIREFOXESR-354924
- published11 Jun 2018
- disclosed11 Jun 2018
Introduced: 11 Jun 2018
CVE-2017-7793 (opens in a new tab)How to fix?
Upgrade Debian:unstable firefox-esr to version 52.4.0esr-2 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:unstable relevant fixed versions and status.
A use-after-free vulnerability can occur in the Fetch API when the worker or the associated window are freed when still in use, resulting in a potentially exploitable crash. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4.
References
- https://security-tracker.debian.org/tracker/CVE-2017-7793
- https://www.debian.org/security/2017/dsa-3987
- https://www.debian.org/security/2017/dsa-4014
- https://lists.debian.org/debian-lts-announce/2017/11/msg00000.html
- https://security.gentoo.org/glsa/201803-14
- https://www.mozilla.org/security/advisories/mfsa2017-21/
- https://www.mozilla.org/security/advisories/mfsa2017-22/
- https://www.mozilla.org/security/advisories/mfsa2017-23/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1371889
- https://access.redhat.com/errata/RHSA-2017:2831
- https://access.redhat.com/errata/RHSA-2017:2885
- http://www.securityfocus.com/bid/101055
- http://www.securitytracker.com/id/1039465
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-7793