Vulnerability Name:

CVE-2017-18342 (CCN-145675)

Assigned:2017-08-26
Published:2017-08-26
Updated:2020-10-14
Summary:In PyYAML before 5.1, the yaml.load() API could execute arbitrary code if used with untrusted data. The load() function has been deprecated in version 5.1 and the 'UnsafeLoader' has been introduced for backward compatibility with the function.
CVSS v3 Severity:9.8 Critical (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.5 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
9.8 Critical (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.5 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:7.5 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
10.0 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-502
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2017-18342

Source: XF
Type: UNKNOWN
pyyaml-cve201718342-code-exec(145675)

Source: MISC
Type: Third Party Advisory
https://github.com/marshmallow-code/apispec/issues/278

Source: MISC
Type: Release Notes, Third Party Advisory
https://github.com/yaml/pyyaml/blob/master/CHANGES

Source: MISC
Type: Third Party Advisory
https://github.com/yaml/pyyaml/issues/193

Source: CCN
Type: pyyaml GIT Repository
Make pyyaml safe by default. #74

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/yaml/pyyaml/pull/74

Source: MISC
Type: Third Party Advisory
https://github.com/yaml/pyyaml/wiki/PyYAML-yaml.load(input)-Deprecation

Source: FEDORA
Type: Third Party Advisory
FEDORA-2019-44643e8bcb

Source: FEDORA
Type: Third Party Advisory
FEDORA-2019-779a9db46a

Source: FEDORA
Type: Third Party Advisory
FEDORA-2019-bed9afe622

Source: GENTOO
Type: Third Party Advisory
GLSA-202003-45

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2017-18342

Vulnerable Configuration:Configuration 1:
  • cpe:/a:pyyaml:pyyaml:*:*:*:*:*:*:*:* (Version < 5.1)

    • Configuration 2:
  • cpe:/o:fedoraproject:fedora:28:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:29:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:30:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:pyyaml:pyyaml:3.12:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:201718342
    V
    		CVE-2017-18342
    2023-06-22
    oval:org.opensuse.security:def:7765
    P
    		python3-PyYAML-5.4.1-1.1 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:3164
    P
    		libdcerpc-binding0-32bit-4.10.5+git.129.35f7bb6e177-1.1 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:94794
    P
    		python3-PyYAML-5.4.1-1.1 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:280
    P
    		python3-PyYAML-5.4.1-1.1 on GA media (Moderate)
    2022-06-13
    oval:org.opensuse.security:def:868
    P
    		Security update for python-paramiko (Moderate)
    2022-04-28
    oval:org.opensuse.security:def:113053
    P
    		oci-cli-3.0.2-1.2 on GA media (Moderate)
    2022-01-17
    oval:org.opensuse.security:def:113252
    P
    		python36-PyYAML-5.4.1-1.6 on GA media (Moderate)
    2022-01-17
    oval:org.opensuse.security:def:113278
    P
    		python36-openapi-spec-validator-0.2.9-1.5 on GA media (Moderate)
    2022-01-17
    oval:org.opensuse.security:def:69960
    P
    		Security update for the Linux Kernel (Important)
    2021-12-02
    oval:org.opensuse.security:def:106493
    P
    		oci-cli-3.0.2-1.2 on GA media (Moderate)
    2021-10-01
    oval:org.opensuse.security:def:106664
    P
    		python36-PyYAML-5.4.1-1.6 on GA media (Moderate)
    2021-10-01
    oval:org.opensuse.security:def:106690
    P
    		python36-openapi-spec-validator-0.2.9-1.5 on GA media (Moderate)
    2021-10-01
    oval:org.opensuse.security:def:101056
    P
    		python3-PyYAML-5.4.1-1.1 on GA media (Moderate)
    2021-08-09
    oval:org.opensuse.security:def:1209
    P
    		python3-PyYAML-5.4.1-1.1 on GA media (Moderate)
    2021-08-09
    oval:org.opensuse.security:def:62298
    P
    		python3-PyYAML-5.4.1-1.1 on GA media (Moderate)
    2021-08-09
    oval:org.opensuse.security:def:72039
    P
    		python3-PyYAML-5.4.1-1.1 on GA media (Moderate)
    2021-08-09
    oval:org.opensuse.security:def:100637
    P
    		 (Important)
    2021-07-15
    oval:org.opensuse.security:def:69855
    P
    		Security update for polkit (Important)
    2021-06-03
    oval:org.opensuse.security:def:116861
    P
    		python3-PyYAML-5.1.2-6.6.1 on GA media (Moderate)
    2020-12-03
    oval:org.opensuse.security:def:71698
    P
    		python3-PyYAML-5.1.2-6.6.1 on GA media (Moderate)
    2020-12-03
    oval:org.opensuse.security:def:93924
    P
    		python3-PyYAML-5.1.2-6.6.1 on GA media (Moderate)
    2020-12-03
    oval:org.opensuse.security:def:107303
    P
    		python3-PyYAML-5.1.2-6.6.1 on GA media (Moderate)
    2020-12-03
    oval:org.opensuse.security:def:61957
    P
    		python3-PyYAML-5.1.2-6.6.1 on GA media (Moderate)
    2020-12-03
    oval:org.opensuse.security:def:73295
    P
    		python3-PyYAML on GA media (Moderate)
    2020-12-01
    oval:org.opensuse.security:def:49255
    P
    		libvorbis-devel on GA media (Moderate)
    2020-12-01
    oval:org.opensuse.security:def:49309
    P
    		python3-PyYAML on GA media (Moderate)
    2020-12-01
    oval:org.opensuse.security:def:73177
    P
    		libmariadb3 on GA media (Moderate)
    2020-12-01
    oval:org.opensuse.security:def:66512
    P
    		libpng16-16 on GA media (Moderate)
    2020-12-01
    oval:org.opensuse.security:def:66604
    P
    		python3-PyYAML on GA media (Moderate)
    2020-12-01
    oval:com.ubuntu.disco:def:2017183420000000
    V
    		CVE-2017-18342 on Ubuntu 19.04 (disco) - low.
    2018-06-27
    oval:com.ubuntu.bionic:def:201718342000
    V
    		CVE-2017-18342 on Ubuntu 18.04 LTS (bionic) - low.
    2018-06-27
    oval:com.ubuntu.cosmic:def:2017183420000000
    V
    		CVE-2017-18342 on Ubuntu 18.10 (cosmic) - low.
    2018-06-27
    oval:com.ubuntu.cosmic:def:201718342000
    V
    		CVE-2017-18342 on Ubuntu 18.10 (cosmic) - low.
    2018-06-27
    oval:com.ubuntu.bionic:def:2017183420000000
    V
    		CVE-2017-18342 on Ubuntu 18.04 LTS (bionic) - low.
    2018-06-27
    oval:com.ubuntu.trusty:def:201718342000
    V
    		CVE-2017-18342 on Ubuntu 14.04 LTS (trusty) - low.
    2018-06-27
    oval:com.ubuntu.xenial:def:2017183420000000
    V
    		CVE-2017-18342 on Ubuntu 16.04 LTS (xenial) - low.
    2018-06-27
    oval:com.ubuntu.xenial:def:201718342000
    V
    		CVE-2017-18342 on Ubuntu 16.04 LTS (xenial) - low.
    2018-06-27
    BACK
    pyyaml pyyaml *
    fedoraproject fedora 28
    fedoraproject fedora 29
    fedoraproject fedora 30
    pyyaml pyyaml 3.12