Design/Logic Flaw

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...

Design/Logic Flaw

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."...

Code injection

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-2010-4021

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-2010-1323

MIT Kerberos 5 aka krb5 1.3.x, 1.4.x, 1.5.x, 1.6.x, 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 modify user-visible prompt text, modify a response to a Key Distribution Center KDC, or forge a KRB-SAFE message via...

CVE-2010-1324

MIT Kerberos 5 (krb5) 1.7.x and 1.8.x up to 1.8.3 are affected by CVE-2010-1324 due to improper acceptability of checksums when verifying the req-checksum in a KrbFastArmoredReq, including unkeyed checksums and RC4-based checksums. This could allow remote attackers to forge GSS tokens, bypass sec...

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...

CVE-2010-4020

MIT Kerberos 5 (krb5) 1.8.x–1.8.3 is affected by CVE-2010-4020 due to not rejecting RC4 key-derivation checksums, enabling remote authenticated users to forge AD-SIGNEDPATH or AD-KDC-ISSUED signatures and potentially gain privileges. Mitigation/advisories reference MITKRB5-SA-2010-007 and patches...

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-2010-4021

CVE-2010-4021 affects MIT Kerberos 5 (krb5) 1.7, where the KDC may inappropriately allow TGT credentials to armoring TGS requests. This can let a remote authenticated attacker impersonate a client by rewriting an inner request via a problematic KrbFastArmoredReq handling. The issue is tied to iss...

CVE-2010-1323

CVE-2010-1323 concerns MIT Kerberos 5 (krb5) with vulnerable checksums in versions 1.3.x–1.8.3. The issue may allow remote attackers to modify user-visible prompt text, alter KDC responses, or forge a KRB-SAFE message when checksums are unkeyed or RC4-based. Connected documents indicate affected ...

CVE-2010-1323

MIT Kerberos 5 aka krb5 1.3.x, 1.4.x, 1.5.x, 1.6.x, 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 modify user-visible prompt text, modify a response to a Key Distribution Center KDC, or forge a KRB-SAFE message via...

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-2010-4021

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-2010-4020

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...

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-2010-1323

MIT Kerberos 5 aka krb5 1.3.x, 1.4.x, 1.5.x, 1.6.x, 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 modify user-visible prompt text, modify a response to a Key Distribution Center KDC, or forge a KRB-SAFE message via...

CentOS 4 / 5 : krb5 (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 CVSS base score, which gives a detailed severity ratin...

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...