Vulnerability Details : CVE-2017-7793
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.
Vulnerability category: Memory Corruption
Exploit prediction scoring system (EPSS) score for CVE-2017-7793
Probability of exploitation activity in the next 30 days: 0.51%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 74 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2017-7793
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST |
|
9.8
|
CRITICAL | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2017-7793
-
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-7793
-
https://www.mozilla.org/security/advisories/mfsa2017-23/
Security vulnerabilities fixed in Thunderbird 52.4 — MozillaVendor Advisory
-
https://lists.debian.org/debian-lts-announce/2017/11/msg00000.html
[SECURITY] [DLA 1153-1] icedove/thunderbird security updateThird Party Advisory
-
http://www.securitytracker.com/id/1039465
Mozilla Firefox Multiple Bugs Let Remote Users Spoof URLs, Conduct Cross-Site Scripting Attacks, Obtain Potentially Sensitive Information, and Execute Arbitrary Code - SecurityTrackerThird Party Advisory;VDB Entry
-
https://www.mozilla.org/security/advisories/mfsa2017-21/
Security vulnerabilities fixed in Firefox 56 — MozillaVendor Advisory
-
https://access.redhat.com/errata/RHSA-2017:2831
RHSA-2017:2831 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
http://www.securityfocus.com/bid/101055
Mozilla Firefox and Firefox ESR Multiple Use After Free Denial of Service VulnerabilitiesThird Party Advisory;VDB Entry
-
https://security.gentoo.org/glsa/201803-14
Mozilla Thunderbird: Multiple vulnerabilities (GLSA 201803-14) — Gentoo securityThird Party Advisory
-
https://www.debian.org/security/2017/dsa-4014
Debian -- Security Information -- DSA-4014-1 thunderbirdThird Party Advisory
-
https://www.mozilla.org/security/advisories/mfsa2017-22/
Security vulnerabilities fixed in Firefox ESR 52.4 — MozillaVendor Advisory
-
https://www.debian.org/security/2017/dsa-3987
Debian -- Security Information -- DSA-3987-1 firefox-esrThird Party Advisory
-
https://access.redhat.com/errata/RHSA-2017:2885
RHSA-2017:2885 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1371889
1371889 - (CVE-2017-7793) Heap-use-after-free in mozilla::dom::(anonymous namespace)::ConsumeBodyDoneObserver<mozilla::dom::Request>::OnStreamCompleteIssue Tracking;Patch;Vendor Advisory
Products affected by CVE-2017-7793
- cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server:5.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_workstation:5.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*