CVE-2020-28196High· 7.5▾ TwilightMIT 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.
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.9 · exploitation 0
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Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
4.4%
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.
kerberos_5 < 1.17.2kerberos_5 >= 1.18.0, < 1.18.3fedora = 31active_iq_unified_managercloud_backuponcommand_insightoncommand_workflow_automationsnapcentercommunications_cloud_native_core_policy = 1.14.0communications_offline_mediation_controller = 12.0.0.3.0communications_pricing_design_center = 12.0.0.3.0mysql_server <= 8.0.23Upgrade past the affected range:
kerberos_5 1.18.3Connected by shared product, vendor, weakness, or advisory.
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CVE-2020-12243High· 7.5In filter.c in slapd in OpenLDAP before 2.4.50, LDAP search filters with nested boolean expressions can result in denial of service (daemon crash).
CVE-2021-45105Medium· 5.9Apache Log4j2 versions 2.0-alpha1 through 2.16.0 (excluding 2.12.3 and 2.3.1) did not protect from uncontrolled recursion from self-referential lookups
CVE-2021-3997Medium· 5.5A flaw was found in systemd
CVE-2026-40356Medium· 5.9In MIT Kerberos 5 (aka krb5) before 1.22.3, there is an integer underflow and resultant out-of-bounds read if an application calls gss_accept_sec_context() on a system with a NegoEx mechanism registered in /etc/gss/mech
CVE-2026-40355Medium· 5.9In MIT Kerberos 5 (aka krb5) before 1.22.3, there is a NULL pointer dereference if an application calls gss_accept_sec_context() on a system with a NegoEx mechanism registered in /etc/gss/mech