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CVE-2021-4209

Опубликовано: 31 авг. 2022
Источник: msrc
CVSS3: 6.5
EPSS Низкий

Описание

A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call memcpy providing zero-length input may cause undefined behavior. This flaw leads to a denial of service after authentication in rare circumstances.

FAQ

Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?

One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.

EPSS

Процентиль: 57%
0.00356
Низкий

6.5 Medium

CVSS3

Связанные уязвимости

CVSS3: 6.5
ubuntu
больше 3 лет назад

A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service after authentication in rare circumstances.

CVSS3: 6.5
redhat
около 4 лет назад

A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service after authentication in rare circumstances.

CVSS3: 6.5
nvd
больше 3 лет назад

A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service after authentication in rare circumstances.

CVSS3: 6.5
debian
больше 3 лет назад

A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash ...

suse-cvrf
почти 4 года назад

Security update for gnutls

EPSS

Процентиль: 57%
0.00356
Низкий

6.5 Medium

CVSS3