CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 0CVE-2018-5709
https://notcve.org/view.php?id=CVE-2018-5709
An issue was discovered in MIT Kerberos 5 (aka krb5) through 1.16. There is a variable "dbentry->n_key_data" in kadmin/dbutil/dump.c that can store 16-bit data but unknowingly the developer has assigned a "u4" variable to it, which is for 32-bit data. An attacker can use this vulnerability to affect other artifacts of the database as we know that a Kerberos database dump file contains trusted data. Se ha descubierto un problema en MIT Kerberos 5 (también conocido como krb5) hasta la versión 1.16. Hay una variable "dbentry->n_key_data" en kadmin/dbutil/dump.c que puede almacenar datos en 16 bits pero, sin saberlo, el desarrollador le ha asignado una variable "u4", que es para datos en 32 bits. • https://github.com/poojamnit/Kerberos-V5-1.16-Vulnerabilities/tree/master/Integer%20Overflow https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E • CWE-190: Integer Overflow or Wraparound •
CVSS: 6.5EPSS: 0%CPEs: 1EXPL: 0CVE-2018-5710
https://notcve.org/view.php?id=CVE-2018-5710
An issue was discovered in MIT Kerberos 5 (aka krb5) through 1.16. The pre-defined function "strlen" is getting a "NULL" string as a parameter value in plugins/kdb/ldap/libkdb_ldap/ldap_principal2.c in the Key Distribution Center (KDC), which allows remote authenticated users to cause a denial of service (NULL pointer dereference) via a modified kadmin client. Se ha descubierto un problema en MIT Kerberos 5 (también conocido como krb5) hasta la versión 1.16. La función predefinida "strlen" tiene una cadena "NULL" como valor de parámetro en plugins/kdb/ldap/libkdb_ldap/ldap_principal2.c en el Key Distribution Center (KDC), lo que permite que usuarios autenticados remotos provoquen una denegación de servicio (desreferencia de puntero NULL) mediante un cliente kadmin modificado. • https://github.com/poojamnit/Kerberos-V5-1.16-Vulnerabilities/tree/master/Denial%20Of%20Service%28DoS%29 • CWE-476: NULL Pointer Dereference •
CVSS: 6.5EPSS: 0%CPEs: 51EXPL: 0CVE-2017-11368 – krb5: Invalid S4U2Self or S4U2Proxy request causes assertion failure
https://notcve.org/view.php?id=CVE-2017-11368
In MIT Kerberos 5 (aka krb5) 1.7 and later, an authenticated attacker can cause a KDC assertion failure by sending invalid S4U2Self or S4U2Proxy requests. En MIT Kerberos 5 (también llamado krb5) en versiones 1.7 y posteriores, un atacante autenticado puede provocar un error de aserción KDC mediante el envío de peticiones S4U2Self o S4U2Proxy no válidas. A denial of service flaw was found in MIT Kerberos krb5kdc service. An authenticated attacker could use this flaw to cause krb5kdc to exit with an assertion failure by making an invalid S4U2Self or S4U2Proxy request. • http://www.securityfocus.com/bid/100291 https://access.redhat.com/errata/RHSA-2018:0666 https://github.com/krb5/krb5/commit/ffb35baac6981f9e8914f8f3bffd37f284b85970 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4HNWXM6OQU7G23MG7XWIOBRGP43ECLDT https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UBUTXMNZWMVJLQ4NDX5OQFPUVCJRLV3W https://access.redhat.com/security/cve/CVE-2017-11368 https://bugzilla.redhat.com/show_bug.cgi?id=1473560 • CWE-617: Reachable Assertion •
CVSS: 5.0EPSS: 19%CPEs: 35EXPL: 0CVE-2014-4342 – krb5: denial of service flaws when handling RFC 1964 tokens
https://notcve.org/view.php?id=CVE-2014-4342
MIT Kerberos 5 (aka krb5) 1.7.x through 1.12.x before 1.12.2 allows remote attackers to cause a denial of service (buffer over-read or NULL pointer dereference, and application crash) by injecting invalid tokens into a GSSAPI application session. MIT Kerberos 5 (también conocido como krb5) 1.7.x hasta 1.12.x anterior a 1.12.2 permite a atacantes remotos causar una denegación de servicio (sobrelectura de buffer o referencia a puntero nulo y caída de aplicación) mediante la inyección de tokens inválidos en una sesión de la aplicación GSSAPI. A buffer over-read flaw was found in the way MIT Kerberos handled certain requests. A remote, unauthenticated attacker who is able to inject packets into a client or server application's GSSAPI session could use this flaw to crash the application. • http://advisories.mageia.org/MGASA-2014-0345.html http://krbdev.mit.edu/rt/Ticket/Display.html?id=7949 http://rhn.redhat.com/errata/RHSA-2015-0439.html http://secunia.com/advisories/59102 http://secunia.com/advisories/60082 http://www.debian.org/security/2014/dsa-3000 http://www.mandriva.com/security/advisories?name=MDVSA-2014:165 http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html http://www.securityfocus.com/bid/68908 http://www.securitytracker.com/ • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-476: NULL Pointer Dereference •
CVSS: 4.3EPSS: 0%CPEs: 8EXPL: 0CVE-2013-6800 – krb5: KDC remote DoS (NULL pointer dereference and daemon crash)
https://notcve.org/view.php?id=CVE-2013-6800
An unspecified third-party database module for the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.10.x allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted request, a different vulnerability than CVE-2013-1418. Un módulo de base de datos de terceros sin especificar para Key Distribution Center (KDC) en MIT Kerberos 5 (también conocido como krb5) 1.10.x permite a usuarios remotos autenticados provocar una denegación de servicio (referencia a puntero NULL y cierre del demonio) a través de una petición manipulada, una vulnerabilidad diferente a CVE-2013-1418. It was found that if a KDC served multiple realms, certain requests could cause the setup_server_realm() function to dereference a NULL pointer. A remote, unauthenticated attacker could use this flaw to crash the KDC using a specially crafted request. • http://krbdev.mit.edu/rt/Ticket/Display.html?id=7757 http://www.securityfocus.com/bid/63770 https://github.com/krb5/krb5/commit/c2ccf4197f697c4ff143b8a786acdd875e70a89d https://access.redhat.com/security/cve/CVE-2013-6800 https://bugzilla.redhat.com/show_bug.cgi?id=1031499 • CWE-476: NULL Pointer Dereference •