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Vulnerability details: VCID-6gtu-v8r3-cuf8
Vulnerability ID VCID-6gtu-v8r3-cuf8
Aliases CVE-2018-6156
Summary Incorrect derivation of a packet length in WebRTC caused heap corruption via a crafted video file. This resulted in a potentially exploitable crash.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-787 Out-of-bounds Write
System Score Found at
cvssv3 8.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-6156.json
epss 0.00603 https://api.first.org/data/v1/epss?cve=CVE-2018-6156
epss 0.00603 https://api.first.org/data/v1/epss?cve=CVE-2018-6156
epss 0.00603 https://api.first.org/data/v1/epss?cve=CVE-2018-6156
epss 0.00603 https://api.first.org/data/v1/epss?cve=CVE-2018-6156
epss 0.00603 https://api.first.org/data/v1/epss?cve=CVE-2018-6156
epss 0.00603 https://api.first.org/data/v1/epss?cve=CVE-2018-6156
epss 0.00603 https://api.first.org/data/v1/epss?cve=CVE-2018-6156
epss 0.00603 https://api.first.org/data/v1/epss?cve=CVE-2018-6156
epss 0.00603 https://api.first.org/data/v1/epss?cve=CVE-2018-6156
epss 0.00603 https://api.first.org/data/v1/epss?cve=CVE-2018-6156
epss 0.00603 https://api.first.org/data/v1/epss?cve=CVE-2018-6156
epss 0.00603 https://api.first.org/data/v1/epss?cve=CVE-2018-6156
epss 0.00603 https://api.first.org/data/v1/epss?cve=CVE-2018-6156
epss 0.00603 https://api.first.org/data/v1/epss?cve=CVE-2018-6156
epss 0.00603 https://api.first.org/data/v1/epss?cve=CVE-2018-6156
epss 0.00603 https://api.first.org/data/v1/epss?cve=CVE-2018-6156
epss 0.00603 https://api.first.org/data/v1/epss?cve=CVE-2018-6156
cvssv2 6.8 https://nvd.nist.gov/vuln/detail/CVE-2018-6156
cvssv3.1 8.8 https://nvd.nist.gov/vuln/detail/CVE-2018-6156
archlinux Critical https://security.archlinux.org/AVG-1055
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2019-34
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-6156.json
https://api.first.org/data/v1/epss?cve=CVE-2018-6156
https://chromereleases.googleblog.com/2018/07/stable-channel-update-for-desktop.html
https://crbug.com/841962
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16064
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-17460
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-17461
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4117
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6150
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6151
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6152
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6153
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6154
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6155
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6156
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6157
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6158
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6159
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6161
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6162
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6163
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6164
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6165
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6166
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6167
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6168
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6169
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6170
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6171
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6172
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6173
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6174
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6175
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6176
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6177
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6178
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6179
1608180 https://bugzilla.redhat.com/show_bug.cgi?id=1608180
ASA-201910-16 https://security.archlinux.org/ASA-201910-16
AVG-1055 https://security.archlinux.org/AVG-1055
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
CVE-2018-6156 https://nvd.nist.gov/vuln/detail/CVE-2018-6156
mfsa2019-34 https://www.mozilla.org/en-US/security/advisories/mfsa2019-34
USN-4165-1 https://usn.ubuntu.com/4165-1/
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-6156.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:M/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2018-6156
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:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2018-6156
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 0.68559
EPSS Score 0.00603
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:10:00.012671+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2019/mfsa2019-34.yml 37.0.0