CVE-2010-4021: Undefined Security Weakness

The Key Distribution Center KDC in MIT Kerberos 5 aka krb5 1.7 does not properly restrict the use of TGT credentials for armoring TGS requests, which might allow remote authenticated users to impersonate a client by rewriting an inner request, aka a "KrbFastReq forgery issue."...

CVE-2010-1324

MIT Kerberos 5 aka krb5 1.7.x and 1.8.x through 1.8.3 does not properly determine the acceptability of checksums, which might allow remote attackers to forge GSS tokens, gain privileges, or have unspecified other impact via 1 an unkeyed checksum, 2 an unkeyed PAC checksum, or 3 a KrbFastArmoredRe...

CVE-2010-4020

MIT Kerberos 5 aka krb5 1.8.x through 1.8.3 does not reject RC4 key-derivation checksums, which might allow remote authenticated users to forge a 1 AD-SIGNEDPATH or 2 AD-KDC-ISSUED signature, and possibly gain privileges, by leveraging the small key space that results from certain one-byte...

Debian DSA-2129-1 : krb5 - checksum verification weakness

A vulnerability has been found in krb5, the MIT implementation of Kerberos. MIT krb5 clients incorrectly accept unkeyed checksums in the SAM-2 preauthentication challenge: an unauthenticated remote attacker could alter a SAM-2 challenge, affecting the prompt text seen by the user or the kind of...

krb5: null pointer dereference in GSS-API library leads to DoS (MITKRB5-SA-2010-005)

The kgacceptkrb5 function in krb5/acceptseccontext.c in the GSS-API library in MIT Kerberos 5 aka krb5 through 1.7.1 and 1.8 before 1.8.2, as used in kadmind and other applications, does not properly check for invalid GSS-API tokens, which allows remote authenticated users to cause a denial of...

[SECURITY] [DSA-2129-1] New krb5 packages fix checksum verification weakness

------------------------------------------------------------------------ Debian Security Advisory DSA-2129-1 [email protected] http://www.debian.org/security/ Stefan Fritsch December 1, 2010 http://www.debian.org/security/faq -...

[SECURITY] [DSA-2129-1] New krb5 packages fix checksum verification weakness

------------------------------------------------------------------------ Debian Security Advisory DSA-2129-1 [email protected] http://www.debian.org/security/ Stefan Fritsch December 1, 2010 http://www.debian.org/security/faq -...

krb5 security update

CentOS Errata and Security Advisory CESA-2010:0926 Updated krb5 packages that fix multiple security issues are now available for Red Hat Enterprise Linux 4 and 5. The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System CVS...

RHEL 4 / 5 : krb5 (RHSA-2010:0926)

The remote Redhat Enterprise Linux 4 / 5 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2010:0926 advisory. Kerberos is a network authentication system which allows clients and servers to authenticate to each other using symmetric encryption and a trust...

MITKRB5-SA-2010-007 Multiple checksum handling vulnerabilities [CVE-2010-1324 CVE-2010-1323 CVE-2010-4020 CVE-2010-4021]

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 MITKRB5-SA-2010-007 MIT krb5 Security Advisory 2010-007 Original release: 2010-11-30 Last update: 2010-11-30 Topic: Multiple checksum handling vulnerabilities CVE-2010-1324 krb5 GSS-API applications may accept unkeyed checksums krb5 application servic...

MIT Kerberos 5 multiple checksum vulnerabilities

Checksum vulnerabilities in GSS-API, JDC, PAC and more...

DSA-2129-1 krb5 - checksum verification weakness

Bulletin has no description...

Moderate: Red Hat Security Advisory: krb5 security update

Updated krb5 packages that fix multiple security issues are now available for Red Hat Enterprise Linux 4 and 5. The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity ratin...

PT-2010-1099

Name of the Vulnerable Software and Affected Versions MIT Kerberos 5 aka krb5 versions 1.3.x through 1.8.3 MIT Kerberos 5 aka krb5 versions prior to 1.9.2 Description The issue is related to the improper determination of checksum acceptability, which could allow remote attackers to modify...

PT-2010-1100

Name of the Vulnerable Software and Affected Versions MIT Kerberos 5 aka krb5 versions 1.7.x through 1.8.3 MIT Kerberos 5 aka krb5 versions prior to 1.9.2-r1 Description The issue is related to the improper determination of checksum acceptability, which could allow remote attackers to forge GSS...

krb5 -- RFC 3961 key-derivation checksum handling vulnerability

The MIT Kerberos team reports: MIT krb5 releases incorrectly accepts RFC 3961 key-derivation checksums using RC4 keys when verifying AD-SIGNEDPATH and AD-KDC-ISSUED authorization data. An authenticated remote attacker that controls a legitimate service principal has a 1/256 chance of forging the...

krb5 -- multiple checksum handling vulnerabilities

The MIT Kerberos team reports: MIT krb5 clients incorrectly accept an unkeyed checksums in the SAM-2 preauthentication challenge. An unauthenticated remote attacker could alter a SAM-2 challenge, affecting the prompt text seen by the user or the kind of response sent to the KDC. Under some...

krb5 -- client impersonation vulnerability

The MIT Kerberos team reports: MIT krb5 KDC may issue tickets not requested by a client, based on an attacker-chosen KrbFastArmoredReq. An authenticated remote attacker that controls a legitimate service principal could obtain a valid service ticket to itself containing valid KDC-generated...

krb5 -- unkeyed PAC checksum handling vulnerability

The MIT Kerberos team reports: MIT krb5 incorrectly accepts an unkeyed checksum for PAC signatures. An authenticated remote attacker can forge PACs if using a KDC that does not filter client-provided PAC data. This can result in privilege escalation against a service that relies on PAC contents t...

PT-2010-1101

Name of the Vulnerable Software and Affected Versions MIT Kerberos 5 aka krb5 versions 1.8.x through 1.8.3 MIT Kerberos 5 aka krb5 versions prior to 1.9.2-r1 Description The issue allows remote authenticated users to potentially forge signatures, such as AD-SIGNEDPATH or AD-KDC-ISSUED, and possib...