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githubGitHub Advisory DatabaseGHSA-GH2C-6M38-C78J
HistoryMay 17, 2022 - 3:46 a.m.

PyWBEM TOCTOU vulnerability in certificate validation

2022-05-1703:46:27
CWE-20
GitHub Advisory Database
github.com
5
pywbem
toctou
vulnerability
certificate validation
ssl servers
x.509 certificate
man-in-the-middle

CVSS2

5.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:P/A:N

AI Score

6.7

Confidence

High

EPSS

0.002

Percentile

54.7%

PyWBEM 0.7 and earlier does not verify that the server hostname matches a domain name in the subject’s Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.

Affected configurations

Vulners
Node
pywbem_projectpywbemRange<0.8.1
VendorProductVersionCPE
pywbem_projectpywbem*cpe:2.3:a:pywbem_project:pywbem:*:*:*:*:*:*:*:*

CVSS2

5.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:P/A:N

AI Score

6.7

Confidence

High

EPSS

0.002

Percentile

54.7%