CVSS: 8.8EPSS: 0%CPEs: 1EXPL: 0CVE-2023-39975 – krb5: double-free in KDC TGS processing
https://notcve.org/view.php?id=CVE-2023-39975
kdc/do_tgs_req.c in MIT Kerberos 5 (aka krb5) 1.21 before 1.21.2 has a double free that is reachable if an authenticated user can trigger an authorization-data handling failure. Incorrect data is copied from one ticket to another. kdc/do_tgs_req.c en MIT Kerberos 5 (también conocido como krb5) 1.21 antes de 1.21.2 tiene un double free que es accesible si un usuario autenticado puede desencadenar un error de gestión de datos de autorización. Los datos incorrectos se copian de un ticket a otro. A vulnerability was found in MIT krb5, where an authenticated attacker can cause a KDC to free the same pointer twice if it can induce a failure in authorization data handling. • https://github.com/krb5/krb5/commit/88a1701b423c13991a8064feeb26952d3641d840 https://github.com/krb5/krb5/compare/krb5-1.21.1-final...krb5-1.21.2-final https://security.netapp.com/advisory/ntap-20230915-0014 https://security.netapp.com/advisory/ntap-20240201-0005 https://security.netapp.com/advisory/ntap-20240201-0008 https://web.mit.edu/kerberos/www/advisories https://access.redhat.com/security/cve/CVE-2023-39975 https://bugzilla.redhat.com/show_bug.cgi?id=2232682 • CWE-415: Double Free •
CVSS: 6.5EPSS: 0%CPEs: 9EXPL: 0CVE-2023-36054 – krb5: Denial of service through freeing uninitialized pointer
https://notcve.org/view.php?id=CVE-2023-36054
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 between n_key_data and the key_data array count, leading to the freeing of uninitialized pointers. • https://github.com/krb5/krb5/commit/ef08b09c9459551aabbe7924fb176f1583053cdd https://github.com/krb5/krb5/compare/krb5-1.20.1-final...krb5-1.20.2-final https://github.com/krb5/krb5/compare/krb5-1.21-final...krb5-1.21.1-final https://lists.debian.org/debian-lts-announce/2023/10/msg00031.html https://security.netapp.com/advisory/ntap-20230908-0004 https://web.mit.edu/kerberos/www/advisories https://access.redhat.com/security/cve/CVE-2023-36054 https://bugzilla.redhat.com&#x • CWE-824: Access of Uninitialized Pointer •
CVSS: 8.8EPSS: 1%CPEs: 7EXPL: 1CVE-2022-42898 – krb5: integer overflow vulnerabilities in PAC parsing
https://notcve.org/view.php?id=CVE-2022-42898
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 1.20.x antes de 1.20.1 tiene desbordamientos de enteros que pueden conducir a la ejecución remota de código (en KDC, kadmind, o un servidor de aplicaciones GSS o Kerberos) en plataformas de 32 bits (que tienen un desbordamiento de búfer resultante), y causar una denegación de servicio en otras plataformas. Esto ocurre en krb5_pac_parse en lib/krb5/krb/pac.c. • https://bugzilla.samba.org/show_bug.cgi?id=15203 https://github.com/heimdal/heimdal/security/advisories/GHSA-64mq-fvfj-5x3c https://github.com/krb5/krb5/commit/ea92d2f0fcceb54a70910fa32e9a0d7a5afc3583 https://security.gentoo.org/glsa/202309-06 https://security.gentoo.org/glsa/202310-06 https://security.netapp.com/advisory/ntap-20230216-0008 https://security.netapp.com/advisory/ntap-20230223-0001 https://web.mit.edu/kerberos/advisories https://web.mit.edu/kerberos/krb5-1.19 https://web& • CWE-190: Integer Overflow or Wraparound •
CVSS: 7.5EPSS: 0%CPEs: 4EXPL: 1CVE-2022-39028
https://notcve.org/view.php?id=CVE-2022-39028
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 supported upstream but is shipped by a few Linux distributions. The affected code was removed from the supported MIT Kerberos 5 (aka krb5) product many years ago, at version 1.8. telnetd en GNU Inetutils versiones hasta 2.3, MIT krb5-appl versiones hasta 1.0.3, y trabajos derivados presenta una desreferencia de puntero NULL por medio de 0xff 0xf7 o 0xff 0xf8. • https://git.hadrons.org/cgit/debian/pkgs/inetutils.git/commit/?id=113da8021710d871c7dd72d2a4d5615d42d64289 https://lists.debian.org/debian-lts-announce/2022/11/msg00033.html https://lists.gnu.org/archive/html/bug-inetutils/2022-08/msg00002.html https://pierrekim.github.io/blog/2022-08-24-2-byte-dos-freebsd-netbsd-telnetd-netkit-telnetd-inetutils-telnetd-kerberos-telnetd.html • 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
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 flaw was found in krb5. The Key Distribution Center (KDC) in MIT Kerberos 5 has a NULL pointer dereference via a FAST inner body that lacks a server field. An authenticated attacker could use this flaw to crash the Kerberos KDC server. • https://github.com/krb5/krb5/commit/d775c95af7606a51bf79547a94fa52ddd1cb7f49 https://github.com/krb5/krb5/releases https://lists.debian.org/debian-lts-announce/2021/09/msg00019.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MFCLW7D46E4VCREKKH453T5DA4XOLHU2 https://security.netapp.com/advisory/ntap-20210923-0002 https://web.mit.edu/kerberos/advisories https://www.oracle.com/security-alerts/cpujul2022.html https://www.starwindsoftware.com/security/sw-20220817-0004 https& • CWE-476: NULL Pointer Dereference •