Samba encryption vulnerabilities

Samba is the standard Windows interoperability program suite for Linux and Unix. A security vulnerability exists in samba versions prior to samba 4.15.13, samba versions prior to samba 4.16.8, which stems from the fact that a Samba AD DC using Heimdal can force the issuance of Kerberos tickets...

rc4-hmac Kerberos session keys issued

Description Kerberos, the trusted third party authentication system at the heart of Active Directory, issues a session key known to the target server and the client, encrypted to both services in a TGS-REP. The key algorithm chosen for here is then used for the subsequent signed or encrypted...

RC4/HMAC-MD5 NetLogon Secure Channel is weak and should be avoided

Description This is Samba's response to Microsoft's CVE-2022-3802312. Following RFC8429 and as has been published for CVE-2022-3938, rc4-hmac also known as arcfour-hmac-md5 cryptography in Kerberos is weak, then it follows that the RC4 mode in the NETLOGON Secure Channel DCE/RPC bulk encryption i...

Kerberos constrained delegation ticket

Description Kerberos constrained delegation, known also as S4U2Proxy, requires that the intermediate service present to the KDC a valid Kerberos ticket including the PAC obtained by the user as evidence that they had authenticated, so that a new ticket can be issued for the target server. The...

dhcp security and enhancement update

12:4.4.2-17.b1 - omshell: add support for hmac-sha512 algorithm 2083553 12:4.4.2-16.b1 - Fix for CVE-2021-25220...

DEBIAN-CVE-2022-37966

Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability...

CVE-2022-37966

Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability...

CVE-2022-37966 Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability

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CVE-2022-37966: Undefined Security Weakness

Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability...

CVE-2022-37966

CVE-2022-37966 is the Windows Kerberos RC4-HMAC Elevation of Privilege vulnerability. Reports in Samba advisories identify this CVE as affecting Samba deployments (e.g., Samba AD DC/members) where RC4-HMAC could be used for Kerberos tickets, allowing elevated access. Remediation focuses on applyi...

Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability

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PT-2022-6084

Name of the Vulnerable Software and Affected Versions Samba Active Directory DCs affected versions not specified Description The issue is related to the use of the RC4-HMAC cryptographic algorithm in the implementation of the Heimdal Kerberos protocol in Samba. This can allow a remote attacker to...

PT-2022-5501

Name of the Vulnerable Software and Affected Versions Windows versions prior to the fixed version Description The issue is related to errors in security settings of the Netlogon Remote Protocol MS-NRPC implementation in Windows operating systems. This allows a remote attacker to elevate their...

PT-2022-5459

Name of the Vulnerable Software and Affected Versions Windows Kerberos versions prior to the update that addresses the RC4-HMAC vulnerability Samba Active Directory DC affected versions not specified Description The issue is related to the implementation of the Kerberos protocol in Windows...

PT-2022-7023 · Python +6 · Python +6

Name of the Vulnerable Software and Affected Versions: Python versions through 3.9.1 Python version 3.12.0b1 Description: The issue is related to the hmac.compare digest function in the Lib/hmac.py module, where constant-time-defeating optimisations were possible in the accumulator variable. This...

gnutls and nettle security, bug fix, and enhancement update

gnutls 3.7.6-12 - fips: mark PBKDF2 with short key and output sizes non-approved - fips: only mark HMAC as approved in PBKDF2 - fips: mark gnutlskeygenerate with short key sizes non-approved - fips: fix checking on hash algorithm used in ECDSA - fips: preserve operation context around FIPS...

Man-in-the-Middle (MitM)

github.com/dexidp/dex is vulnerable to man-in-the-middle attacks. The vulnerability exists because the library does not properly implement the HMAC protection on the approval endpoint, allowing an attacker to capture the id token via intercepted authorization code...

Dex vulnerable to Man-in-the-Middle allowing ID token capture via intercepted authorization code

Impact Dex instances with public clients and by extension, clients accepting tokens issued by those Dex instances are affected by this vulnerability. An attacker can exploit this vulnerability by making a victim navigate to a malicious website and guiding them through the OIDC flow, stealing the...

GHSA-VH7G-P26C-J2CW Dex vulnerable to Man-in-the-Middle allowing ID token capture via intercepted authorization code

Impact Dex instances with public clients and by extension, clients accepting tokens issued by those Dex instances are affected by this vulnerability. An attacker can exploit this vulnerability by making a victim navigate to a malicious website and guiding them through the OIDC flow, stealing the...

GSD-2022-1006444 ipv6: sr: fix out-of-bounds read when setting HMAC data.

ipv6: sr: fix out-of-bounds read when setting HMAC data. This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.14.293 by commit...