CVE-2018-5729

krb5: null dereference in kadmind or DN container check bypass by supplying special crafted data

MIT krb5 1.6 or later allows an authenticated kadmin with permission to add principals to an LDAP Kerberos database to cause a denial of service (NULL pointer dereference) or bypass a DN container check by supplying tagged data that is internal to the database module.

CVSS 3.1 · 4.7 Medium EPSS 2.6% KEV · Not listed

Vendors

Debian Fedoraproject Mit and 1 more

Products

Debian Linux Fedora Kerberos 5 and 4 more

CVE-2018-5730

krb5: DN container check bypass by supplying special crafted data

MIT krb5 1.6 or later allows an authenticated kadmin with permission to add principals to an LDAP Kerberos database to circumvent a DN containership check by supplying both a "linkdn" and "containerdn" database argument, or by supplying a DN string which is a left extension of a container DN string but is not hierarchically within the container DN.

CVSS 3.1 · 3.8 Low EPSS 2.2% KEV · Not listed

Vendors

Debian Fedoraproject Mit and 1 more

Products

Debian Linux Fedora Kerberos 5 and 4 more

CVE-2017-15088

krb5: Buffer overflow in get_matching_data()

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 certauth plugin code that is specific to Red Hat.

CVSS 3.1 · 9.8 Critical EPSS 8.6% KEV · Not listed

Vendors

Mit

Products

Kerberos 5

CVE-2017-11368

krb5: Invalid S4U2Self or S4U2Proxy request causes assertion failure

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.

CVSS 3.0 · 6.5 Medium EPSS 2.4% KEV · Not listed

Vendors

Fedoraproject Mit Redhat

Products

Fedora Kerberos Kerberos 5 and 1 more

CVE-2017-11462

krb5: Automatic sec context deletion could lead to double-free

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.

CVSS 3.0 · 9.8 Critical EPSS 5.5% KEV · Not listed

Vendors

Fedoraproject Mit

Products

Fedora Kerberos 5

CVE-2014-4345

krb5: buffer overrun in kadmind with LDAP backend (MITKRB5-SA-2014-001)

Off-by-one error in the krb5_encode_krbsecretkey function in plugins/kdb/ldap/libkdb_ldap/ldap_principal2.c in the LDAP KDB module in kadmind in MIT Kerberos 5 (aka krb5) 1.6.x through 1.11.x before 1.11.6 and 1.12.x before 1.12.2 allows remote authenticated users to cause a denial of service (buffer overflow) or possibly execute arbitrary code via a series of "cpw -keepold" commands.

CVSS 2.0 · 8.5 High EPSS 8.1% KEV · Not listed

Vendors

Mit Redhat

Products

Kerberos 5 Enterprise Linux

CVE-2014-5351

krb5: current keys returned when randomizing the keys for a service principal

The kadm5_randkey_principal_3 function in lib/kadm5/srv/svr_principal.c in kadmind in MIT Kerberos 5 (aka krb5) before 1.13 sends old keys in a response to a -randkey -keepold request, which allows remote authenticated users to forge tickets by leveraging administrative access.

CVSS 2.0 · 2.1 Low EPSS 2.6% KEV · Not listed

Vendors

Mit

Products

Kerberos 5

CVE-2014-5352

krb5: gss_process_context_token() incorrectly frees context (MITKRB5-SA-2015-001)

The krb5_gss_process_context_token function in lib/gssapi/krb5/process_context_token.c in the libgssapi_krb5 library in MIT Kerberos 5 (aka krb5) through 1.11.5, 1.12.x through 1.12.2, and 1.13.x before 1.13.1 does not properly maintain security-context handles, which allows remote authenticated users to cause a denial of service (use-after-free and double free, and daemon crash) or possibly execute arbitrary code via crafted GSSAPI traffic, as demonstrated by traffic to kadmind.

CVSS 2.0 · 9.0 Critical EPSS 6.2% KEV · Not listed

Vendors

Mit Redhat

Products

Kerberos 5 Enterprise Linux

CVE-2014-5353

krb5: NULL pointer dereference when using a ticket policy name as a password policy name

The krb5_ldap_get_password_policy_from_dn function in plugins/kdb/ldap/libkdb_ldap/ldap_pwd_policy.c in MIT Kerberos 5 (aka krb5) before 1.13.1, when the KDC uses LDAP, allows remote authenticated users to cause a denial of service (daemon crash) via a successful LDAP query with no results, as demonstrated by using an incorrect object type for a password policy.

CVSS 2.0 · 3.5 Low EPSS 5.0% KEV · Not listed

Vendors

Canonical Debian Fedoraproject and 4 more

Products

Ubuntu Linux Debian Linux Fedora and 10 more

CVE-2014-5354

krb5: NULL pointer dereference when using keyless entries

plugins/kdb/ldap/libkdb_ldap/ldap_principal2.c in MIT Kerberos 5 (aka krb5) 1.12.x and 1.13.x before 1.13.1, when the KDC uses LDAP, allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) by creating a database entry for a keyless principal, as demonstrated by a kadmin "add_principal -nokey" or "purgekeys -all" command.

CVSS 2.0 · 3.5 Low EPSS 1.7% KEV · Not listed

Vendors

Mit

Products

Kerberos Kerberos 5

CVE-2014-5355

krb5: unauthenticated denial of service in recvauth_common() and others

MIT Kerberos 5 (aka krb5) through 1.13.1 incorrectly expects that a krb5_read_message data field is represented as a string ending with a '\0' character, which allows remote attackers to (1) cause a denial of service (NULL pointer dereference) via a zero-byte version string or (2) cause a denial of service (out-of-bounds read) by omitting the '\0' character, related to appl/user_user/server.c and lib/krb5/krb/recvauth.c.

CVSS 2.0 · 5.0 Medium EPSS 4.6% KEV · Not listed

Vendors

Mit Redhat

Products

Kerberos 5 Enterprise Linux

CVE-2014-9421

krb5: kadmind doubly frees partial deserialization results (MITKRB5-SA-2015-001)

The auth_gssapi_unwrap_data function in lib/rpc/auth_gssapi_misc.c in MIT Kerberos 5 (aka krb5) through 1.11.5, 1.12.x through 1.12.2, and 1.13.x before 1.13.1 does not properly handle partial XDR deserialization, which allows remote authenticated users to cause a denial of service (use-after-free and double free, and daemon crash) or possibly execute arbitrary code via malformed XDR data, as demonstrated by data sent to kadmind.

CVSS 2.0 · 9.0 Critical EPSS 6.2% KEV · Not listed

Vendors

Mit Redhat

Products

Kerberos 5 Enterprise Linux

CVE-2014-9422

krb5: kadmind incorrectly validates server principal name (MITKRB5-SA-2015-001)

The check_rpcsec_auth function in kadmin/server/kadm_rpc_svc.c in kadmind in MIT Kerberos 5 (aka krb5) through 1.11.5, 1.12.x through 1.12.2, and 1.13.x before 1.13.1 allows remote authenticated users to bypass a kadmin/* authorization check and obtain administrative access by leveraging access to a two-component principal with an initial "kadmind" substring, as demonstrated by a "ka/x" principal.

CVSS 2.0 · 6.1 Medium EPSS 2.7% KEV · Not listed

Vendors

Mit Redhat

Products

Kerberos 5 Enterprise Linux

CVE-2014-9423

krb5: libgssrpc server applications leak uninitialized bytes (MITKRB5-SA-2015-001)

The svcauth_gss_accept_sec_context function in lib/rpc/svc_auth_gss.c in MIT Kerberos 5 (aka krb5) 1.11.x through 1.11.5, 1.12.x through 1.12.2, and 1.13.x before 1.13.1 transmits uninitialized interposer data to clients, which allows remote attackers to obtain sensitive information from process heap memory by sniffing the network for data in a handle field.

CVSS 2.0 · 5.0 Medium EPSS 3.9% KEV · Not listed

Vendors

Mit Redhat

Products

Kerberos 5 Enterprise Linux

CVE-2015-2694

krb5: issues in OTP and PKINIT kdcpreauth modules leading to requires_preauth bypass

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.

CVSS 2.0 · 5.8 Medium EPSS 2.8% KEV · Not listed

Vendors

Mit Redhat

Products

Kerberos 5 Enterprise Linux

CVE-2015-2695

krb5: SPNEGO context aliasing bugs

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.

CVSS 2.0 · 5.0 Medium EPSS 6.0% KEV · Not listed

Vendors

Canonical Debian Mit and 3 more

Products

Ubuntu Linux Debian Linux Kerberos 5 and 6 more

CVE-2015-2696

krb5: IAKERB context aliasing flaw

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.

CVSS 2.0 · 7.1 High EPSS 4.5% KEV · Not listed

Vendors

Canonical Debian Mit and 2 more

Products

Ubuntu Linux Debian Linux Kerberos 5 and 5 more

CVE-2015-2697

krb5: build_principal() memory flaw

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.

CVSS 2.0 · 4.0 Medium EPSS 4.0% KEV · Not listed

Vendors

Canonical Debian Mit and 3 more

Products

Ubuntu Linux Debian Linux Kerberos 5 and 6 more

CVE-2015-2698

krb5: IAKERB context export/import

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.

CVSS 2.0 · 8.5 High EPSS 2.9% KEV · Not listed

Vendors

Mit

Products

Kerberos 5

CVE-2015-8629

krb5: xdr_nullstring() doesn't check for terminating null character

The xdr_nullstring function in lib/kadm5/kadm_rpc_xdr.c in kadmind in MIT Kerberos 5 (aka krb5) before 1.13.4 and 1.14.x before 1.14.1 does not verify whether '\0' characters exist as expected, which allows remote authenticated users to obtain sensitive information or cause a denial of service (out-of-bounds read) via a crafted string.

CVSS 3.1 · 5.3 Medium EPSS 3.7% KEV · Not listed

Vendors

Debian Mit Opensuse and 2 more

Products

Debian Linux Kerberos 5 Leap and 10 more