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ubuntuUbuntuUSN-4940-1
HistoryMay 10, 2021 - 12:00 a.m.

PyYAML vulnerability

2021-05-1000:00:00
ubuntu.com
370
pyyaml
ubuntu
fullloader
remote attacker
arbitrary code
yaml parser

CVSS2

10

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

9.8

Confidence

High

EPSS

0.003

Percentile

68.0%

JSON

Releases

  • Ubuntu 20.10
  • Ubuntu 20.04 LTS

Packages

  • pyyaml - YAML parser and emitter for Python

Details

It was discovered that PyYAML incorrectly handled untrusted YAML files with
the FullLoader loader. A remote attacker could possibly use this issue to
execute arbitrary code.

OSVersionArchitecturePackageVersionFilename
Ubuntu20.10noarchpython3-yaml< 5.3.1-2ubuntu0.1UNKNOWN
Ubuntu20.10noarchpython3-yaml-dbg< 5.3.1-2ubuntu0.1UNKNOWN
Ubuntu20.04noarchpython-yaml< 5.3.1-1ubuntu0.1UNKNOWN
Ubuntu20.04noarchpython-yaml-dbg< 5.3.1-1ubuntu0.1UNKNOWN
Ubuntu20.04noarchpython3-yaml< 5.3.1-1ubuntu0.1UNKNOWN
Ubuntu20.04noarchpython3-yaml-dbg< 5.3.1-1ubuntu0.1UNKNOWN

Related

redos 43
oraclelinux 1
fedora 2
openvas 17
nessus 30
ibm 5
cbl_mariner 1
osv 9
photon 5
prion 1
mageia 1
redhat 2
veracode 1
redhatcve 1
f5 1
github 1
alpinelinux 1
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nvd 1
gentoo 1
freebsd 1
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almalinux 1
ubuntucve 1
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rocky 1
cve 1
githubexploit 1
oracle 3
redos
redos
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2021-09-08 00:00:00
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2021-12-24 00:00:00
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2024-03-13 00:00:00
oraclelinux
oraclelinux
python38:3.8 and python38-devel:3.8 security update
2021-07-02 00:00:00
fedora
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[SECURITY] Fedora 32 Update: PyYAML-5.4.1-1.fc32
2021-01-30 01:42:55
[SECURITY] Fedora 33 Update: PyYAML-5.4.1-1.fc33
2021-01-23 01:32:47
openvas
openvas
Huawei EulerOS: Security Advisory for PyYAML (EulerOS-SA-2021-1168)
2021-02-02 00:00:00
Ubuntu: Security Advisory (USN-4940-1)
2021-05-12 00:00:00
Huawei EulerOS: Security Advisory for PyYAML (EulerOS-SA-2021-2078)
2021-07-07 00:00:00
nessus
nessus
EulerOS 2.0 SP8 : PyYAML (EulerOS-SA-2021-1168)
2021-02-01 00:00:00
Photon OS 3.0: Pyyaml PHSA-2021-3.0-0190
2021-02-02 00:00:00
Ubuntu 20.04 LTS : PyYAML vulnerability (USN-4940-1)
2021-05-12 00:00:00
ibm
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Security Bulletin: Vulnerability in PyYAML affects IBM Cloud Pak for Data System 2.0 (CPDS 2.0) [CVE-2020-14343]
2024-03-11 12:51:16
Security Bulletin: Critical Vulnerabilities in libraries used by libraries that IBM Spectrum discover is using (libraries of libraries)
2022-03-28 16:33:43
Security Bulletin: IBM Cloud Pak for Network Automation 2.6.4 fixes multiple security vulnerabilities
2023-12-15 14:31:02
cbl_mariner
cbl_mariner
CVE-2020-14343 affecting package PyYAML for versions less than 5.4.1-1
2023-11-10 17:45:58
osv
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pyyaml vulnerability
2021-05-10 14:19:33
CVE-2020-14343
2021-02-09 21:15:12
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2021-06-29 13:57:32
photon
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Critical Photon OS Security Update - PHSA-2021-0190
2021-02-02 00:00:00
Home Download Photon OS User Documentation FAQ Security Advisories Related Information Lightwave - PHSA-2021-1.0-0361
2021-02-22 00:00:00
Critical Photon OS Security Update - PHSA-2021-3.0-0190
2021-02-02 00:00:00
prion
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Input validation
2021-02-09 21:15:00
mageia
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Updated python-yaml packages fix security vulnerability
2021-03-12 04:25:47
redhat
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(RHSA-2021:2583) Moderate: python38:3.8 and python38-devel:3.8 security update
2021-06-29 13:57:32
(RHSA-2021:4702) Moderate: Satellite 6.10 Release
2021-11-16 13:58:57
veracode
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Arbitrary Code Execution
2020-10-27 05:37:05
redhatcve
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CVE-2020-14343
2020-07-24 17:37:40
f5
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K000139898: PyYAML vulnerabilities CVE-2020-1747 and CVE-2020-14343
2024-06-05 00:00:00
github
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Improper Input Validation in PyYAML
2021-03-25 21:26:26
alpinelinux
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2021-02-09 21:15:12
cvelist
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2021-02-09 00:00:00
nvd
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2021-02-09 21:15:12
gentoo
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2024-02-26 00:00:00
freebsd
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2020-07-22 00:00:00
debiancve
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CVE-2020-14343
2021-02-09 21:15:12
almalinux
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2021-06-29 13:57:32
ubuntucve
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2021-02-09 00:00:00
attackerkb
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2021-02-09 00:00:00
rocky
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cve
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2021-02-09 21:15:12
githubexploit
githubexploit
Exploit for Improper Input Validation in Pyyaml
2021-06-27 06:56:15
oracle
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Oracle Critical Patch Update Advisory - July 2022
2022-07-19 00:00:00
Oracle Critical Patch Update Advisory - April 2023
2023-04-18 00:00:00
Oracle Critical Patch Update Advisory - April 2022
2022-04-19 00:00:00

CVSS2

10

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

9.8

Confidence

High

EPSS

0.003

Percentile

68.0%

JSON
Related for USN-4940-1
redos43oraclelinux1fedora2openvas17nessus30ibm5cbl_mariner1osv9photon5prion1mageia1redhat2veracode1redhatcve1f51github1alpinelinux1cvelist1nvd1gentoo1freebsd1debiancve1almalinux1ubuntucve1attackerkb1rocky1cve1githubexploit1oracle3