Null pointer dereference

2015-02-2011:59:00

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7 High

AI Score

Confidence

High

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

0.949 High

EPSS

Percentile

99.2%

JSON

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.

CPENameOperatorVersion
kerberos_5eq1.1
kerberos_5eq1.2
kerberos_5eq1.2.1
kerberos_5eq1.2.2
kerberos_5eq1.2.3
kerberos_5eq1.2.4
kerberos_5eq1.2.5
kerberos_5eq1.2.6
kerberos_5eq1.2.7
kerberos_5eq1.2.8

Name	Operator	Version
kerberos_5	eq	1.1
kerberos_5	eq	1.2
kerberos_5	eq	1.2.1
kerberos_5	eq	1.2.2
kerberos_5	eq	1.2.3
kerberos_5	eq	1.2.4
kerberos_5	eq	1.2.5
kerberos_5	eq	1.2.6
kerberos_5	eq	1.2.7
kerberos_5	eq	1.2.8