VuXML ID | Description |
406636fe-055d-11e5-aab1-d050996490d0 | krb5 -- requires_preauth bypass in PKINIT-enabled KDC
MIT reports:
In MIT krb5 1.12 and later, when the KDC is configured
with PKINIT support, an unauthenticated remote attacker
can bypass the requires_preauth flag on a client principal
and obtain a ciphertext encrypted in the principal's
long-term key. This ciphertext could be used to conduct
an off-line dictionary attack against the user's password.
Discovery 2015-05-25 Entry 2015-05-28 krb5
< 1.13.2
krb5-112
< 1.12.3_2
CVE-2015-2694
http://krbdev.mit.edu/rt/Ticket/Display.html?id=8160
|
4ab413ea-66ce-11e0-bf05-d445f3aa24f0 | krb5 -- MITKRB5-SA-2011-002, KDC vulnerable to hang when using LDAP back end
An advisory published by the MIT Kerberos team says:
The MIT krb5 Key Distribution Center (KDC) daemon is vulnerable
to denial of service attacks from unauthenticated remote
attackers. CVE-2011-0281 and CVE-2011-0282 occur only in KDCs
using LDAP back ends, but CVE-2011-0283 occurs in all krb5-1.9
KDCs.
Exploit code is not known to exist, but the vulnerabilities are
easy to trigger manually. The trigger for CVE-2011-0281 has
already been disclosed publicly, but that fact might not be
obvious to casual readers of the message in which it was
disclosed. The triggers for CVE-2011-0282 and CVE-2011-0283
have not yet been disclosed publicly, but they are also
trivial.
CVE-2011-0281: An unauthenticated remote attacker can cause a KDC
configured with an LDAP back end to become completely unresponsive
until restarted.
CVE-2011-0282: An unauthenticated remote attacker can cause a KDC
configured with an LDAP back end to crash with a null pointer
dereference.
CVE-2011-0283: An unauthenticated remote attacker can cause a
krb5-1.9 KDC with any back end to crash with a null pointer
dereference.
Discovery 2011-02-08 Entry 2011-04-14 krb5
ge 1.7 lt 1.7.2
ge 1.8 le 1.8.4
eq 1.9
CVE-2011-0281
CVE-2011-0282
CVE-2011-0283
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-002.txt
|
7edac52a-66cd-11e0-9398-5d45f3aa24f0 | krb5 -- MITKRB5-SA-2011-003, KDC vulnerable to double-free when PKINIT enabled
An advisory published by the MIT Kerberos team says:
The MIT Kerberos 5 Key Distribution Center (KDC) daemon is
vulnerable to a double-free condition if the Public Key
Cryptography for Initial Authentication (PKINIT) capability is
enabled, resulting in daemon crash or arbitrary code execution
(which is believed to be difficult).
An unauthenticated remote attacker can induce a double-free
event, causing the KDC daemon to crash (denial of service),
or to execute arbitrary code. Exploiting a double-free event
to execute arbitrary code is believed to be difficult.
Discovery 2011-03-15 Entry 2011-04-14 krb5
ge 1.7 lt 1.7.2
ge 1.8 lt 1.8.4
eq 1.9
CVE-2011-0284
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-003.txt
|
6a3c3e5c-66cb-11e0-a116-c535f3aa24f0 | krb5 -- MITKRB5-SA-2011-004, kadmind invalid pointer free() [CVE-2011-0285]
An advisory published by the MIT Kerberos team says:
The password-changing capability of the MIT krb5 administration
daemon (kadmind) has a bug that can cause it to attempt to free()
an invalid pointer under certain error conditions. This can cause
the daemon to crash or induce the execution of arbitrary code
(which is believed to be difficult). No exploit that executes
arbitrary code is known to exist, but it is easy to trigger a
denial of service manually.
Some platforms detect attempted freeing of invalid pointers and
protectively terminate the process, preventing arbitrary code
execution on those platforms.
Discovery 2011-04-12 Entry 2011-04-14 krb5
ge 1.7 lt 1.7.2
ge 1.8 lt 1.8.4
eq 1.9
CVE-2011-0285
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-004.txt
|
3a888a1e-b321-11e4-83b2-206a8a720317 | krb5 -- Vulnerabilities in kadmind, libgssrpc, gss_process_context_token VU#540092
The MIT Kerberos team reports:
CVE-2014-5353: 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.
CVE-2014-5354: 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.
Discovery 2015-02-12 Entry 2015-02-12 Modified 2015-02-13 krb5
< 1.13.1
krb5-112
< 1.12.2_2
krb5-111
< 1.11.5_5
CVE-2014-5353
CVE-2014-5354
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2015-001.txt
|
64f24a1e-66cf-11e0-9deb-f345f3aa24f0 | krb5 -- MITKRB5-SA-2011-001, kpropd denial of service
An advisory published by the MIT Kerberos team says:
The MIT krb5 KDC database propagation daemon (kpropd) is
vulnerable to a denial-of-service attack triggered by invalid
network input. If a kpropd worker process receives invalid
input that causes it to exit with an abnormal status, it can
cause the termination of the listening process that spawned it,
preventing the slave KDC it was running on from receiving
database updates from the master KDC.
Exploit code is not known to exist, but the vulnerabilities are
easy to trigger manually.
An unauthenticated remote attacker can cause kpropd running in
standalone mode (the "-S" option) to terminate its listening
process, preventing database propagations to the KDC host on
which it was running. Configurations where kpropd runs in
incremental propagation mode ("iprop") or as an inetd server
are not affected.
Discovery 2011-02-08 Entry 2011-04-14 krb5
ge 1.7 lt 1.7.2
ge 1.8 lt 1.8.4
eq 1.9
CVE-2010-4022
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-001.txt
|
6c7d9a35-2608-11e1-89b4-001ec9578670 | krb5 -- KDC null pointer dereference in TGS handling
The MIT Kerberos Team reports:
In releases krb5-1.9 and later, the KDC can crash due to a NULL
pointer dereference in code that handles TGS (Ticket Granting
Service) requests. The trigger condition is trivial to produce
using unmodified client software, but requires the ability to
authenticate as a principal in the KDC's realm.
Discovery 2011-12-11 Entry 2011-12-14 krb5
ge 1.9 lt 1.9.2_1
CVE-2011-1530
http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2011-007.txt
|
3f3837cc-48fb-4414-aa46-5b1c23c9feae | krb5 -- Multiple vulnerabilities
MIT reports:
CVE-2017-11368:
In MIT krb5 1.7 and later, an authenticated attacker can cause an
assertion failure in krb5kdc by sending an invalid S4U2Self or
S4U2Proxy request.
CVE-2017-11462:
RFC 2744 permits a GSS-API implementation to delete an existing
security context on a second or subsequent call to gss_init_sec_context()
or gss_accept_sec_context() if the call results in an error.
This API behavior has been found to be dangerous, leading to the
possibility of memory errors in some callers. For safety, GSS-API
implementations should instead preserve existing security contexts
on error until the caller deletes them.
All versions of MIT krb5 prior to this change may delete acceptor
contexts on error. Versions 1.13.4 through 1.13.7, 1.14.1 through
1.14.5, and 1.15 through 1.15.1 may also delete initiator contexts
on error.
Discovery 2017-07-14 Entry 2017-10-18 krb5
< 1.14.6
ge 1.15 lt 1.15.2
krb5-devel
< 1.14.6
ge 1.15 lt 1.15.2
krb5-115
< 1.15.2
krb5-114
< 1.14.6
krb5-113
< 1.14.6
https://nvd.nist.gov/vuln/detail/CVE-2017-11368
https://krbdev.mit.edu/rt/Ticket/Display.html?id=8599
https://github.com/krb5/krb5/commit/ffb35baac6981f9e8914f8f3bffd37f284b85970
https://nvd.nist.gov/vuln/detail/CVE-2017-11462
https://krbdev.mit.edu/rt/Ticket/Display.html?id=8598
https://github.com/krb5/krb5/commit/56f7b1bc95a2a3eeb420e069e7655fb181ade5cf
CVE-2017-11368
CVE-2017-11462
|
24ce5597-acab-11e4-a847-206a8a720317 | krb5 -- Vulnerabilities in kadmind, libgssrpc, gss_process_context_token VU#540092
SO-AND-SO reports:
CVE-2014-5352: In the MIT krb5 libgssapi_krb5 library, after
gss_process_context_token() is used to process a valid context
deletion token, the caller is left with a security context handle
containing a dangling pointer. Further uses of this handle will
result in use-after-free and double-free memory access violations.
libgssrpc server applications such as kadmind are vulnerable as
they can be instructed to call gss_process_context_token().
CVE-2014-9421: If the MIT krb5 kadmind daemon receives invalid XDR
data from an authenticated user, it may perform use-after-free and
double-free memory access violations while cleaning up the partial
deserialization results. Other libgssrpc server applications may
also be vulnerable if they contain insufficiently defensive XDR
functions.
CVE-2014-9422: The MIT krb5 kadmind daemon incorrectly accepts
authentications to two-component server principals whose first
component is a left substring of "kadmin" or whose realm is a left
prefix of the default realm.
CVE-2014-9423: libgssrpc applications including kadmind output
four or eight bytes of uninitialized memory to the network as
part of an unused "handle" field in replies to clients.
Discovery 2015-02-03 Entry 2015-02-04 krb5
< 1.13_1
krb5-112
< 1.12.2_1
krb5-111
< 1.11.5_4
CVE-2014-5352
CVE-2014-9421
CVE-2014-9422
CVE-2014-9423
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2015-001.txt
|
f54584bc-7d2b-11e2-9bd1-206a8a720317 | krb5 -- null pointer dereference in the KDC PKINIT code [CVE-2013-1415]
No advisory has been released yet.
Fix a null pointer dereference in the KDC PKINIT code [CVE-2013-1415].
Discovery 2013-02-21 Entry 2013-02-22 krb5
le 1.11
CVE-2013-1415
http://web.mit.edu/kerberos/www/krb5-1.11/
|
e3f64457-cccd-11e2-af76-206a8a720317 | krb5 -- UDP ping-pong vulnerability in the kpasswd (password changing) service. [CVE-2002-2443]
No advisory has been released yet.
schpw.c in the kpasswd service in kadmind in MIT Kerberos 5
(aka krb5) before 1.11.3 does not properly validate UDP packets
before sending responses, which allows remote attackers to cause
a denial of service (CPU and bandwidth consumption) via a forged
packet that triggers a communication loop, as demonstrated by
krb_pingpong.nasl, a related issue to CVE-1999-0103.
[CVE-2002-2443].
Discovery 2013-05-10 Entry 2013-06-03 krb5
le 1.11.2
CVE-2002-2443
http://web.mit.edu/kerberos/www/krb5-1.11/
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