Описание
Improper Verification of Cryptographic Signature in PySAML2
PySAML2 before 5.0.0 does not check that the signature in a SAML document is enveloped and thus signature wrapping is effective, i.e., it is affected by XML Signature Wrapping (XSW). The signature information and the node/object that is signed can be in different places and thus the signature verification will succeed, but the wrong data will be used. This specifically affects the verification of assertions that have been signed.
Ссылки
- https://nvd.nist.gov/vuln/detail/CVE-2020-5390
- https://github.com/IdentityPython/pysaml2/commit/5e9d5acbcd8ae45c4e736ac521fd2df5b1c62e25
- https://github.com/IdentityPython/pysaml2/commit/f27c7e7a7010f83380566a219fd6a290a00f2b6e
- https://github.com/IdentityPython/pysaml2/blob/master/CHANGELOG.md#500-2020-01-13
- https://github.com/IdentityPython/pysaml2/releases
- https://github.com/IdentityPython/pysaml2/releases/tag/v5.0.0
- https://github.com/advisories/GHSA-qf7v-8hj3-4xw7
- https://github.com/pypa/advisory-database/tree/main/vulns/pysaml2/PYSEC-2020-94.yaml
- https://lists.debian.org/debian-lts-announce/2020/02/msg00025.html
- https://pypi.org/project/pysaml2/5.0.0
- https://usn.ubuntu.com/4245-1
- https://www.debian.org/security/2020/dsa-4630
Пакеты
pysaml2
< 5.0.0
5.0.0
Связанные уязвимости
PySAML2 before 5.0.0 does not check that the signature in a SAML document is enveloped and thus signature wrapping is effective, i.e., it is affected by XML Signature Wrapping (XSW). The signature information and the node/object that is signed can be in different places and thus the signature verification will succeed, but the wrong data will be used. This specifically affects the verification of assertion that have been signed.
PySAML2 before 5.0.0 does not check that the signature in a SAML document is enveloped and thus signature wrapping is effective, i.e., it is affected by XML Signature Wrapping (XSW). The signature information and the node/object that is signed can be in different places and thus the signature verification will succeed, but the wrong data will be used. This specifically affects the verification of assertion that have been signed.
PySAML2 before 5.0.0 does not check that the signature in a SAML document is enveloped and thus signature wrapping is effective, i.e., it is affected by XML Signature Wrapping (XSW). The signature information and the node/object that is signed can be in different places and thus the signature verification will succeed, but the wrong data will be used. This specifically affects the verification of assertion that have been signed.
PySAML2 before 5.0.0 does not check that the signature in a SAML docum ...
Уязвимость библиотеки для обмена идентификационными данными по стандарту SAML2 PySAML2, связанная с некорректным подтверждением криптографической подписи данных, позволяющая нарушителю обойти проверку подписи и получить доступ к защищаемой информации