CVSS: 6.8EPSS: 2%CPEs: 9EXPL: 0CVE-2023-36054 – krb5: Denial of service through freeing uninitialized pointer
https://notcve.org/view.php?id=CVE-2023-36054
07 Aug 2023 — lib/kadm5/kadm_rpc_xdr.c in MIT Kerberos 5 (aka krb5) before 1.20.2 and 1.21.x before 1.21.1 frees an uninitialized pointer. A remote authenticated user can trigger a kadmind crash. This occurs because _xdr_kadm5_principal_ent_rec does not validate the relationship between n_key_data and the key_data array count. A vulnerability was found in the _xdr_kadm5_principal_ent_rec() function in lib/kadm5/kadm_rpc_xdr.c in MIT Kerberos 5 (krb5). This issue occurs due to lack of validation in the relationship betwee... • https://github.com/krb5/krb5/commit/ef08b09c9459551aabbe7924fb176f1583053cdd • CWE-824: Access of Uninitialized Pointer •
CVSS: 9.0EPSS: 6%CPEs: 7EXPL: 1CVE-2022-42898 – krb5: integer overflow vulnerabilities in PAC parsing
https://notcve.org/view.php?id=CVE-2022-42898
21 Nov 2022 — PAC parsing in MIT Kerberos 5 (aka krb5) before 1.19.4 and 1.20.x before 1.20.1 has integer overflows that may lead to remote code execution (in KDC, kadmind, or a GSS or Kerberos application server) on 32-bit platforms (which have a resultant heap-based buffer overflow), and cause a denial of service on other platforms. This occurs in krb5_pac_parse in lib/krb5/krb/pac.c. Heimdal before 7.7.1 has "a similar bug." El análisis sintáctico de PAC en MIT Kerberos 5 (también conocido como krb5) antes de 1.19.4 y... • https://bugzilla.samba.org/show_bug.cgi?id=15203 • CWE-190: Integer Overflow or Wraparound •
CVSS: 7.8EPSS: 0%CPEs: 4EXPL: 1CVE-2022-39028 – Ubuntu Security Notice USN-6304-1
https://notcve.org/view.php?id=CVE-2022-39028
30 Aug 2022 — telnetd in GNU Inetutils through 2.3, MIT krb5-appl through 1.0.3, and derivative works has a NULL pointer dereference via 0xff 0xf7 or 0xff 0xf8. In a typical installation, the telnetd application would crash but the telnet service would remain available through inetd. However, if the telnetd application has many crashes within a short time interval, the telnet service would become unavailable after inetd logs a "telnet/tcp server failing (looping), service terminated" error. NOTE: MIT krb5-appl is not sup... • https://git.hadrons.org/cgit/debian/pkgs/inetutils.git/commit/?id=113da8021710d871c7dd72d2a4d5615d42d64289 • CWE-476: NULL Pointer Dereference •
CVSS: 6.5EPSS: 0%CPEs: 6EXPL: 0CVE-2021-37750 – krb5: NULL pointer dereference in process_tgs_req() in kdc/do_tgs_req.c via a FAST inner body that lacks server field
https://notcve.org/view.php?id=CVE-2021-37750
23 Aug 2021 — The Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.18.5 and 1.19.x before 1.19.3 has a NULL pointer dereference in kdc/do_tgs_req.c via a FAST inner body that lacks a server field. El Centro de Distribución de Claves (KDC) en MIT Kerberos 5 (también se conoce como krb5) versiones anteriores a 1.18.5 y 1.19.x versiones anteriores a 1.19.3, presenta una desreferencia de puntero NULL en el archivo kdc/do_tgs_req.c por medio de un cuerpo interno FAST que carece de un campo de servidor. A fl... • https://github.com/krb5/krb5/commit/d775c95af7606a51bf79547a94fa52ddd1cb7f49 • CWE-476: NULL Pointer Dereference •
CVSS: 7.5EPSS: 5%CPEs: 9EXPL: 0CVE-2021-36222 – krb5: Sending a request containing PA-ENCRYPTED-CHALLENGE padata element without using FAST could result in NULL dereference in KDC which leads to DoS
https://notcve.org/view.php?id=CVE-2021-36222
22 Jul 2021 — ec_verify in kdc/kdc_preauth_ec.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.18.4 and 1.19.x before 1.19.2 allows remote attackers to cause a NULL pointer dereference and daemon crash. This occurs because a return value is not properly managed in a certain situation. La función ec_verify en el archivo kdc/kdc_preauth_ec.c en el Centro de Distribución de Claves (KDC) en MIT Kerberos 5 (también se conoce como krb5) versiones anteriores a 1.18.4 y versiones 1.19.x anteriores a 1... • https://github.com/krb5/krb5/commit/fc98f520caefff2e5ee9a0026fdf5109944b3562 • CWE-476: NULL Pointer Dereference •
CVSS: 7.5EPSS: 0%CPEs: 13EXPL: 0CVE-2020-28196 – krb5: unbounded recursion via an ASN.1-encoded Kerberos message in lib/krb5/asn.1/asn1_encode.c may lead to DoS
https://notcve.org/view.php?id=CVE-2020-28196
06 Nov 2020 — MIT Kerberos 5 (aka krb5) before 1.17.2 and 1.18.x before 1.18.3 allows unbounded recursion via an ASN.1-encoded Kerberos message because the lib/krb5/asn.1/asn1_encode.c support for BER indefinite lengths lacks a recursion limit. MIT Kerberos versión 5 (también se conoce como krb5) versiones anteriores a 1.17.2 y versiones 1.18.x anteriores a 1.18.3, permite una recursividad ilimitada por medio de un mensaje Kerberos codificado en ASN.1 porque el soporte de la biblioteca lib/krb5 /asn.1/asn1_encode.c para ... • https://github.com/krb5/krb5/commit/57415dda6cf04e73ffc3723be518eddfae599bfd • CWE-674: Uncontrolled Recursion •
CVSS: 7.5EPSS: 16%CPEs: 4EXPL: 0CVE-2019-14844
https://notcve.org/view.php?id=CVE-2019-14844
26 Sep 2019 — A flaw was found in, Fedora versions of krb5 from 1.16.1 to, including 1.17.x, in the way a Kerberos client could crash the KDC by sending one of the RFC 4556 "enctypes". A remote unauthenticated user could use this flaw to crash the KDC. Se encontró un fallo en Fedora versiones de krb5 desde 1.16.1 hasta 1.17.x (incluyéndola), en la manera en que un cliente de Kerberos podría bloquear el KDC mediante el envío de uno de los "enctypes" 4556 de RFC. Un usuario no autenticado remoto podría utilizar este fallo ... • https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14844 • CWE-628: Function Call with Incorrectly Specified Arguments •
CVSS: 6.5EPSS: 0%CPEs: 5EXPL: 0CVE-2017-7562 – krb5: Authentication bypass by improper validation of certificate EKU and SAN
https://notcve.org/view.php?id=CVE-2017-7562
11 Apr 2018 — An authentication bypass flaw was found in the way krb5's certauth interface before 1.16.1 handled the validation of client certificates. A remote attacker able to communicate with the KDC could potentially use this flaw to impersonate arbitrary principals under rare and erroneous circumstances. Se ha encontrado un error de omisión de autenticación en la forma en que la interfaz de certauth de krb5 en versiones anteriores a la 1.16.1 gestionaba la validación de los certificados de cliente. Un atacante remot... • http://www.securityfocus.com/bid/100511 • CWE-287: Improper Authentication CWE-295: Improper Certificate Validation •
CVSS: 9.8EPSS: 1%CPEs: 1EXPL: 0CVE-2017-15088
https://notcve.org/view.php?id=CVE-2017-15088
23 Nov 2017 — plugins/preauth/pkinit/pkinit_crypto_openssl.c in MIT Kerberos 5 (aka krb5) through 1.15.2 mishandles Distinguished Name (DN) fields, which allows remote attackers to execute arbitrary code or cause a denial of service (buffer overflow and application crash) in situations involving untrusted X.509 data, related to the get_matching_data and X509_NAME_oneline_ex functions. NOTE: this has security relevance only in use cases outside of the MIT Kerberos distribution, e.g., the use of get_matching_data in KDC ce... • http://www.securityfocus.com/bid/101594 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-121: Stack-based Buffer Overflow •
CVSS: 9.8EPSS: 0%CPEs: 15EXPL: 0CVE-2017-11462
https://notcve.org/view.php?id=CVE-2017-11462
13 Sep 2017 — Double free vulnerability in MIT Kerberos 5 (aka krb5) allows attackers to have unspecified impact via vectors involving automatic deletion of security contexts on error. Existe una vulnerabilidad de doble liberación (double free) en MIT Kerberos 5 (también conocido como krb5) que permite que atacantes provoquen un impacto no especificado mediante vectores que causen borrados automáticos de contextos de seguridad por error. • http://krbdev.mit.edu/rt/Ticket/Display.html?id=8598 • CWE-415: Double Free •