Описание
A flaw was found in gnutls. Servers configured with RSA-PSK (Rivest–Shamir–Adleman – Pre-Shared Key) wrongfully matched usernames containing a NUL character with truncated usernames. A remote attacker could exploit this by sending a specially crafted username, leading to an authentication bypass. This vulnerability allows an attacker to gain unauthorized access by circumventing the authentication process.
| Релиз | Статус | Примечание |
|---|---|---|
| devel | not-affected | 3.8.12-2ubuntu1.1 |
| esm-infra-legacy/xenial | not-affected | code not present |
| esm-infra/bionic | not-affected | code not present |
| esm-infra/focal | released | 3.6.13-2ubuntu1.12+esm2 |
| esm-infra/xenial | ignored | end of ESM support, was needs-triage |
| fips-preview/jammy | needed | |
| fips-updates/jammy | released | 3.7.3-4ubuntu1.9+Fips1 |
| fips-updates/noble | released | 3.8.3-1.1ubuntu3.6+Fips1.2 |
| jammy | released | 3.7.3-4ubuntu1.9 |
| noble | released | 3.8.3-1.1ubuntu3.6 |
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EPSS
9.8 Critical
CVSS3
Связанные уязвимости
A flaw was found in gnutls. Servers configured with RSA-PSK (Rivest–Shamir–Adleman – Pre-Shared Key) wrongfully matched usernames containing a NUL character with truncated usernames. A remote attacker could exploit this by sending a specially crafted username, leading to an authentication bypass. This vulnerability allows an attacker to gain unauthorized access by circumventing the authentication process.
A flaw was found in gnutls. Servers configured with RSA-PSK (Rivest–Shamir–Adleman – Pre-Shared Key) wrongfully matched usernames containing a NUL character with truncated usernames. A remote attacker could exploit this by sending a specially crafted username, leading to an authentication bypass. This vulnerability allows an attacker to gain unauthorized access by circumventing the authentication process.
Gnutls: gnutls: authentication bypass via nul character in username
A flaw was found in gnutls. Servers configured with RSA-PSK (Rivest\u2 ...
EPSS
9.8 Critical
CVSS3