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Vulnerability details: VCID-agc9-wc5b-aaag
Vulnerability ID VCID-agc9-wc5b-aaag
Aliases CVE-2017-6920
GHSA-9c24-g32g-35rj
Summary PECL YAML parser unsafe object handling PECL YAML parser does not handle PHP objects safely during certain operations within Drupal core. This can lead to remote code execution.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-19 Data Processing Errors
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-94 Improper Control of Generation of Code ('Code Injection')
System Score Found at
epss 0.05221 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.05221 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.05221 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.06571 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.06571 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.06571 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.06571 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.06571 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.06571 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.06571 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.06571 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.06571 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.06571 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.06571 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.06571 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67679 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67679 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67679 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67679 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67679 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67679 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67679 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67679 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67679 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67679 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67679 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67679 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67679 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67997 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67997 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67997 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67997 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67997 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67997 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67997 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67997 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67997 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67997 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67997 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67997 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67997 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67997 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67997 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67997 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67997 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67997 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67997 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67997 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67997 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67997 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67997 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67997 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
epss 0.67997 https://api.first.org/data/v1/epss?cve=CVE-2017-6920
cvssv3.1_qr CRITICAL https://github.com/advisories/GHSA-9c24-g32g-35rj
cvssv3.1 6.5 https://github.com/drupal/core
generic_textual CRITICAL https://github.com/drupal/core
cvssv2 7.5 https://nvd.nist.gov/vuln/detail/CVE-2017-6920
cvssv3 9.8 https://nvd.nist.gov/vuln/detail/CVE-2017-6920
cvssv3.1 6.5 https://www.drupal.org/forum/newsletters/security-advisories-for-drupal-core/2017-06-21/drupal-core-multiple
generic_textual MODERATE https://www.drupal.org/forum/newsletters/security-advisories-for-drupal-core/2017-06-21/drupal-core-multiple
cvssv3.1 6.5 https://www.drupal.org/SA-CORE-2017-003
generic_textual MODERATE https://www.drupal.org/SA-CORE-2017-003
cvssv3.1 9.8 http://www.securityfocus.com/bid/99211
generic_textual CRITICAL http://www.securityfocus.com/bid/99211
cvssv3.1 6.5 http://www.securitytracker.com/id/1038781
generic_textual MODERATE http://www.securitytracker.com/id/1038781
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2017-6920
https://github.com/drupal/core
https://www.drupal.org/forum/newsletters/security-advisories-for-drupal-core/2017-06-21/drupal-core-multiple
https://www.drupal.org/SA-CORE-2017-003
http://www.securityfocus.com/bid/99211
http://www.securitytracker.com/id/1038781
cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*
CVE-2017-6920 https://nvd.nist.gov/vuln/detail/CVE-2017-6920
CVE-2017-6920.YAML https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2017-6920.yaml
CVE-2017-6920.YAML https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2017-6920.yaml
GHSA-9c24-g32g-35rj https://github.com/advisories/GHSA-9c24-g32g-35rj
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N Found at https://github.com/drupal/core
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:L/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2017-6920
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-2017-6920
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: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Found at https://www.drupal.org/forum/newsletters/security-advisories-for-drupal-core/2017-06-21/drupal-core-multiple
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: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Found at https://www.drupal.org/SA-CORE-2017-003
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: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at http://www.securityfocus.com/bid/99211
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: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Found at http://www.securitytracker.com/id/1038781
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 0.92899
EPSS Score 0.05221
Published At Dec. 17, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.