ALT-PU-2024-7788-2
Closed vulnerabilities
Published: 2021-12-22
BDU:2022-01898
Уязвимость реализации функции wrap_nettle_hash_fast() криптографической библиотеки GnuTLS, позволяющая нарушителю вызвать отказ в обслуживании
Severity: MEDIUM (6.5)
Vector: AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References:
Published: 2022-08-24
Modified: 2024-11-21
Modified: 2024-11-21
CVE-2021-4209
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.
Severity: MEDIUM (6.5)
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References:
- https://access.redhat.com/security/cve/CVE-2021-4209
- https://access.redhat.com/security/cve/CVE-2021-4209
- https://bugzilla.redhat.com/show_bug.cgi?id=2044156
- https://bugzilla.redhat.com/show_bug.cgi?id=2044156
- https://gitlab.com/gnutls/gnutls/-/commit/3db352734472d851318944db13be73da61300568
- https://gitlab.com/gnutls/gnutls/-/commit/3db352734472d851318944db13be73da61300568
- https://gitlab.com/gnutls/gnutls/-/issues/1306
- https://gitlab.com/gnutls/gnutls/-/issues/1306
- https://gitlab.com/gnutls/gnutls/-/merge_requests/1503
- https://gitlab.com/gnutls/gnutls/-/merge_requests/1503
- https://security.netapp.com/advisory/ntap-20220915-0005/
- https://security.netapp.com/advisory/ntap-20220915-0005/