CVSS: 4.0EPSS: 83%CPEs: 15EXPL: 0CVE-2015-2697
https://notcve.org/view.php?id=CVE-2015-2697
The build_principal_va function in lib/krb5/krb/bld_princ.c in MIT Kerberos 5 (aka krb5) before 1.14 allows remote authenticated users to cause a denial of service (out-of-bounds read and KDC crash) via an initial '\0' character in a long realm field within a TGS request. La función build_principal_va en lib/krb5/krb/bld_princ.c en MIT Kerberos 5 (también conocido como krb5) en versiones anteriores a 1.14 permite a usuarios remotos autenticados provocar una denegación de servicio (lectura fuera de rango y caída de KDC) a través de un carácter inicial '\0' en un campo realm largo dentro de una solicitud TGS. • http://krbdev.mit.edu/rt/Ticket/Display.html?id=8252 http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00006.html http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00014.html http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00022.html http://www.debian.org/security/2015/dsa-3395 http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html http://www.securityfocus.com/bid/77581 http://www.securitytracker.com/id/1034084 http://w • CWE-125: Out-of-bounds Read •
CVSS: 5.8EPSS: 0%CPEs: 6EXPL: 0CVE-2015-2694 – krb5: issues in OTP and PKINIT kdcpreauth modules leading to requires_preauth bypass
https://notcve.org/view.php?id=CVE-2015-2694
The kdcpreauth modules in MIT Kerberos 5 (aka krb5) 1.12.x and 1.13.x before 1.13.2 do not properly track whether a client's request has been validated, which allows remote attackers to bypass an intended preauthentication requirement by providing (1) zero bytes of data or (2) an arbitrary realm name, related to plugins/preauth/otp/main.c and plugins/preauth/pkinit/pkinit_srv.c. Los módulos kdcpreauth en MIT Kerberos 5 (también conocido como krb5) 1.12.x y 1.13.x anterior a 1.13.2 no rastrea correctamente si la solicitud de un cliente ha sido validada, lo que permite a atacantes remotos evadir un requisito de preautenticación mediante la provisión de (1) cero bytes de datos o (2) un nombre de ámbito (realm) arbitrario, relacionado con plugins/preauth/otp/main.c y plugins/preauth/pkinit/pkinit_srv.c. A flaw was found in the OTP kdcpreauth module of MIT Kerberos. A remote attacker could use this flaw to bypass the requires_preauth flag on a client principal and obtain a ciphertext encrypted in the principal's long-term key. This ciphertext could be used to conduct an off-line dictionary attack against the user's password. • http://krbdev.mit.edu/rt/Ticket/Display.html?id=8160 http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html http://www.securityfocus.com/bid/74824 http://www.ubuntu.com/usn/USN-2810-1 https://github.com/krb5/krb5/commit/e3b5a5e5267818c97750b266df50b6a3d4649604 https://access.redhat.com/security/cve/CVE-2015-2694 https://bugzilla.redhat.com/show_bug.cgi?id=1216133 • CWE-264: Permissions, Privileges, and Access Controls •
CVSS: 5.0EPSS: 95%CPEs: 60EXPL: 0CVE-2014-5355 – krb5: unauthenticated denial of service in recvauth_common() and others
https://notcve.org/view.php?id=CVE-2014-5355
MIT Kerberos 5 (aka krb5) through 1.13.1 incorrectly expects that a krb5_read_message data field is represented as a string ending with a '\0' character, which allows remote attackers to (1) cause a denial of service (NULL pointer dereference) via a zero-byte version string or (2) cause a denial of service (out-of-bounds read) by omitting the '\0' character, related to appl/user_user/server.c and lib/krb5/krb/recvauth.c. MIT Kerberos 5 (también conocido como krb5) hasta 1.13.1 espera incorrectamente que un campo de datos krb5_read_message se representa como una cadena que termine con un caracter '\0', lo que permite a atacantes remotos (1) causar una denegación de servicio (referencia a puntero nulo) a través de una cadena de versión de cero bytes o (2) causar una denegación de servicio (lectura fuera de rango) mediante la omisión del caracter '\0', relacionado con appl/user_user/server.c y lib/krb5/krb/recvauth.c. It was found that the krb5_read_message() function of MIT Kerberos did not correctly sanitize input, and could create invalid krb5_data objects. A remote, unauthenticated attacker could use this flaw to crash a Kerberos child process via a specially crafted request. • http://krbdev.mit.edu/rt/Ticket/Display.html?id=8050 http://lists.opensuse.org/opensuse-updates/2015-03/msg00061.html http://rhn.redhat.com/errata/RHSA-2015-0794.html http://www.mandriva.com/security/advisories?name=MDVSA-2015:069 http://www.oracle.com/technetwork/topics/security/bulletinjan2015-2370101.html http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html http://www.securityfocus.com/bid/74042 http://www.ubuntu.com/usn/USN-2810-1 https://github.com • CWE-476: NULL Pointer Dereference •