CVE-2015-2698
https://notcve.org/view.php?id=CVE-2015-2698
The iakerb_gss_export_sec_context function in lib/gssapi/krb5/iakerb.c in MIT Kerberos 5 (aka krb5) 1.14 pre-release 2015-09-14 improperly accesses a certain pointer, which allows remote authenticated users to cause a denial of service (memory corruption) or possibly have unspecified other impact by interacting with an application that calls the gss_export_sec_context function. NOTE: this vulnerability exists because of an incorrect fix for CVE-2015-2696. La función iakerb_gss_export_sec_context en lib/gssapi/krb5/iakerb.c en MIT Kerberos 5 (también conocida como krb5) 1.14 pre-release 2015-09-14 no accede adecuadamente a cierto puntero, lo que permite a usuarios remotos autenticados causar una denegación de servicio (corrupción de memoria) o posiblemente tener otro impacto no especificado al interactuar con una aplicación que llama a la función gss_export_sec_context. NOTA: esta vulnerabilidad existe debido a una solución incorrecta para CVE-2015-2696. • http://krbdev.mit.edu/rt/Ticket/Display.html?id=8273 http://lists.opensuse.org/opensuse-updates/2015-11/msg00116.html http://lists.opensuse.org/opensuse-updates/2015-12/msg00124.html http://www.ubuntu.com/usn/USN-2810-1 https://github.com/krb5/krb5/commit/3db8dfec1ef50ddd78d6ba9503185995876a39fd • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
CVE-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 •
CVE-2015-2696
https://notcve.org/view.php?id=CVE-2015-2696
lib/gssapi/krb5/iakerb.c in MIT Kerberos 5 (aka krb5) before 1.14 relies on an inappropriate context handle, which allows remote attackers to cause a denial of service (incorrect pointer read and process crash) via a crafted IAKERB packet that is mishandled during a gss_inquire_context call. lib/gssapi/krb5/iakerb.c en MIT Kerberos 5 (también conocido como krb5) en versiones anteriores a 1.14 confía en un manejo de contexto inapropiado, lo cual permite a atacantes remotos provocar una denegación de servicio (lectura de puntero incorrecto y caída de proceso) a través de un paquete IAKERB manipulado que no es manejado correctamente durante una llamada a gss_inquire_context. • http://krbdev.mit.edu/rt/Ticket/Display.html?id=8244 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.securityfocus.com/bid/90675 http://www.securitytracker.com/id/1034084 http://www.ubuntu.com/usn/USN-2810-1 https://github.com/krb5/krb5/commit/ • CWE-18: DEPRECATED: Source Code •
CVE-2015-2695
https://notcve.org/view.php?id=CVE-2015-2695
lib/gssapi/spnego/spnego_mech.c in MIT Kerberos 5 (aka krb5) before 1.14 relies on an inappropriate context handle, which allows remote attackers to cause a denial of service (incorrect pointer read and process crash) via a crafted SPNEGO packet that is mishandled during a gss_inquire_context call. lib/gssapi/spnego/spnego_mech.c en MIT Kerberos 5 (también conocido como krb5) en versiones anteriores a 1.14 confía en un manejo de contexto inapropiado, lo que permite a atacantes remotos provocar una denegación de servicio (lectura de puntero incorrecto y caída de proceso) a través de un paquete SPNEGO manipulado que no es manejado correctamente durante una llamada a gss_inquire_context. • http://krbdev.mit.edu/rt/Ticket/Display.html?id=8244 http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00006.html http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00007.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& • CWE-763: Release of Invalid Pointer or Reference •
CVE-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 •