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Vulnerability details: VCID-metk-5msu-zffq
Vulnerability ID VCID-metk-5msu-zffq
Aliases CVE-2017-5396
Summary A use-after-free vulnerability in the Media Decoder when working with media files when some events are fired after the media elements are freed from memory.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-416 Use After Free
System Score Found at
cvssv3 9.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-5396.json
epss 0.02023 https://api.first.org/data/v1/epss?cve=CVE-2017-5396
epss 0.02023 https://api.first.org/data/v1/epss?cve=CVE-2017-5396
epss 0.02023 https://api.first.org/data/v1/epss?cve=CVE-2017-5396
epss 0.02023 https://api.first.org/data/v1/epss?cve=CVE-2017-5396
epss 0.02023 https://api.first.org/data/v1/epss?cve=CVE-2017-5396
epss 0.02023 https://api.first.org/data/v1/epss?cve=CVE-2017-5396
epss 0.02023 https://api.first.org/data/v1/epss?cve=CVE-2017-5396
epss 0.02023 https://api.first.org/data/v1/epss?cve=CVE-2017-5396
epss 0.02023 https://api.first.org/data/v1/epss?cve=CVE-2017-5396
epss 0.02023 https://api.first.org/data/v1/epss?cve=CVE-2017-5396
epss 0.02023 https://api.first.org/data/v1/epss?cve=CVE-2017-5396
epss 0.02023 https://api.first.org/data/v1/epss?cve=CVE-2017-5396
epss 0.02023 https://api.first.org/data/v1/epss?cve=CVE-2017-5396
cvssv2 5.1 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 7.5 https://nvd.nist.gov/vuln/detail/CVE-2017-5396
cvssv3 9.8 https://nvd.nist.gov/vuln/detail/CVE-2017-5396
archlinux Critical https://security.archlinux.org/AVG-157
archlinux Critical https://security.archlinux.org/AVG-158
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2017-01
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2017-02
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2017-03
Reference id Reference type URL
http://rhn.redhat.com/errata/RHSA-2017-0190.html
http://rhn.redhat.com/errata/RHSA-2017-0238.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-5396.json
https://api.first.org/data/v1/epss?cve=CVE-2017-5396
https://bugzilla.mozilla.org/show_bug.cgi?id=1329403
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5373
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5375
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5376
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5378
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5380
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5383
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5386
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5390
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5396
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5398
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5400
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5401
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5402
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5404
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5405
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5407
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5408
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5410
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://security.gentoo.org/glsa/201702-13
https://security.gentoo.org/glsa/201702-22
https://www.debian.org/security/2017/dsa-3771
https://www.debian.org/security/2017/dsa-3832
https://www.mozilla.org/security/advisories/mfsa2017-01/
https://www.mozilla.org/security/advisories/mfsa2017-02/
https://www.mozilla.org/security/advisories/mfsa2017-03/
http://www.securityfocus.com/bid/95769
http://www.securitytracker.com/id/1037693
1416280 https://bugzilla.redhat.com/show_bug.cgi?id=1416280
ASA-201701-39 https://security.archlinux.org/ASA-201701-39
ASA-201701-40 https://security.archlinux.org/ASA-201701-40
AVG-157 https://security.archlinux.org/AVG-157
AVG-158 https://security.archlinux.org/AVG-158
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server:5.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server:5.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_workstation:5.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_workstation:5.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
CVE-2017-5396 https://nvd.nist.gov/vuln/detail/CVE-2017-5396
mfsa2017-01 https://www.mozilla.org/en-US/security/advisories/mfsa2017-01
mfsa2017-02 https://www.mozilla.org/en-US/security/advisories/mfsa2017-02
mfsa2017-03 https://www.mozilla.org/en-US/security/advisories/mfsa2017-03
RHSA-2017:0190 https://access.redhat.com/errata/RHSA-2017:0190
RHSA-2017:0238 https://access.redhat.com/errata/RHSA-2017:0238
USN-3165-1 https://usn.ubuntu.com/3165-1/
USN-3175-1 https://usn.ubuntu.com/3175-1/
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-5396.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:H/Au:N/C:P/I:P/A:P Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2017-5396
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2017-5396
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.83021
EPSS Score 0.02023
Published At Aug. 7, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:09:15.815428+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2017/mfsa2017-03.yml 37.0.0