Debian Security Bug TrackerDEBIANCVE:CVE-2021-4209CVE-2021-4209
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:N/I:N/A:P
0.002 Low
EPSS
Percentile
58.3%
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.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Debian | 12 | all | gnutls28 | < 3.7.3-2 | gnutls28_3.7.3-2_all.deb |
| Debian | 11 | all | gnutls28 | < 3.7.1-5+deb11u1 | gnutls28_3.7.1-5+deb11u1_all.deb |
| Debian | 10 | all | gnutls28 | < 3.6.7-4+deb10u9 | gnutls28_3.6.7-4+deb10u9_all.deb |
| Debian | 999 | all | gnutls28 | < 3.7.3-2 | gnutls28_3.7.3-2_all.deb |
| Debian | 13 | all | gnutls28 | < 3.7.3-2 | gnutls28_3.7.3-2_all.deb |
Related
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:N/I:N/A:P
0.002 Low
EPSS
Percentile
58.3%