// For flags

CVE-2009-0845

krb5: NULL pointer dereference in GSSAPI SPNEGO (MITKRB5-SA-2009-001)

Severity Score

5.0
*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

The spnego_gss_accept_sec_context function in lib/gssapi/spnego/spnego_mech.c in MIT Kerberos 5 (aka krb5) 1.5 through 1.6.3, when SPNEGO is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via invalid ContextFlags data in the reqFlags field in a negTokenInit token.

La función spnego_gss_accept_sec_context en lib/gssapi/spnego/spnego_mech.c en MIT Kerberos 5 (conocido como krb5) v.1.6.3, cuando se utiliza SPNEGO, permite a atacantes remotos provocar una denegación de servicio (referencia a puntero nulo y caída de la aplicación) mediante datos "ContextFlags" inválidos en el campo "reqFlags" en el token negTokenInit.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2009-03-06 CVE Reserved
  • 2009-03-27 CVE Published
  • 2023-11-05 EPSS Updated
  • 2024-08-07 CVE Updated
  • 2024-08-07 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-20: Improper Input Validation
  • CWE-476: NULL Pointer Dereference
CAPEC
References (46)
URL Tag Source
http://krbdev.mit.edu/rt/Ticket/Display.html?user=guest&pass=guest&id=6402 X_refsource_confirm
http://secunia.com/advisories/34594 Third Party Advisory
http://secunia.com/advisories/34617 Third Party Advisory
http://secunia.com/advisories/34622 Third Party Advisory
http://secunia.com/advisories/34628 Third Party Advisory
http://secunia.com/advisories/34630 Third Party Advisory
http://secunia.com/advisories/34637 Third Party Advisory
http://secunia.com/advisories/34640 Third Party Advisory
http://secunia.com/advisories/34734 Third Party Advisory
http://support.apple.com/kb/HT3549 X_refsource_confirm
http://support.avaya.com/elmodocs2/security/ASA-2009-142.htm X_refsource_confirm
http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047180.html X_refsource_misc
http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047181.html X_refsource_misc
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2009-001.txt X_refsource_confirm
http://wiki.rpath.com/Advisories:rPSA-2009-0058 X_refsource_confirm
http://wiki.rpath.com/wiki/Advisories:rPSA-2009-0058 X_refsource_misc
http://www-01.ibm.com/support/docview.wss?uid=swg21396120 X_refsource_confirm
http://www.kb.cert.org/vuls/id/662091 Third Party Advisory
http://www.securityfocus.com/archive/1/502526/100/0/threaded Mailing List
http://www.securityfocus.com/archive/1/502546/100/0/threaded Mailing List
http://www.securityfocus.com/bid/34257 Vdb Entry
http://www.securitytracker.com/id?1021867 Vdb Entry
http://www.us-cert.gov/cas/techalerts/TA09-133A.html Third Party Advisory
http://www.vupen.com/english/advisories/2009/0976 Vdb Entry
http://www.vupen.com/english/advisories/2009/1057 Vdb Entry
http://www.vupen.com/english/advisories/2009/1106 Vdb Entry
http://www.vupen.com/english/advisories/2009/1297 Vdb Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/49448 Vdb Entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10044 Signature
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6449 Signature
URL Date SRC
http://src.mit.edu/fisheye/browse/krb5/trunk/src/lib/gssapi/spnego/spnego_mech.c?r1=21875&r2=22084 2024-08-07
URL Date SRC
URL Date SRC
http://lists.apple.com/archives/security-announce/2009/May/msg00002.html 2020-01-21
http://secunia.com/advisories/34347 2020-01-21
http://secunia.com/advisories/35074 2020-01-21
http://security.gentoo.org/glsa/glsa-200904-09.xml 2020-01-21
http://src.mit.edu/fisheye/changelog/krb5/?cs=22084 2020-01-21
http://sunsolve.sun.com/search/document.do?assetkey=1-26-256728-1 2020-01-21
http://www.mandriva.com/security/advisories?name=MDVSA-2009:082 2020-01-21
http://www.redhat.com/support/errata/RHSA-2009-0408.html 2020-01-21
http://www.ubuntu.com/usn/usn-755-1 2020-01-21
http://www.vupen.com/english/advisories/2009/0847 2020-01-21
http://www.vupen.com/english/advisories/2009/2248 2020-01-21
https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00205.html 2020-01-21
https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00206.html 2020-01-21
https://access.redhat.com/security/cve/CVE-2009-0845 2009-04-07
https://bugzilla.redhat.com/show_bug.cgi?id=490634 2009-04-07
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Mit
Search vendor "Mit"
 Kerberos
Search vendor "Mit" for product "Kerberos"
 5-1.6.3
Search vendor "Mit" for product "Kerberos" and version "5-1.6.3"
-
Affected
Mit
Search vendor "Mit"
 Kerberos 5
Search vendor "Mit" for product "Kerberos 5"
 1.5
Search vendor "Mit" for product "Kerberos 5" and version "1.5"
-
Affected
Mit
Search vendor "Mit"
 Kerberos 5
Search vendor "Mit" for product "Kerberos 5"
 1.5.1
Search vendor "Mit" for product "Kerberos 5" and version "1.5.1"
-
Affected
Mit
Search vendor "Mit"
 Kerberos 5
Search vendor "Mit" for product "Kerberos 5"
 1.5.2
Search vendor "Mit" for product "Kerberos 5" and version "1.5.2"
-
Affected
Mit
Search vendor "Mit"
 Kerberos 5
Search vendor "Mit" for product "Kerberos 5"
 1.5.3
Search vendor "Mit" for product "Kerberos 5" and version "1.5.3"
-
Affected
Mit
Search vendor "Mit"
 Kerberos 5
Search vendor "Mit" for product "Kerberos 5"
 1.6
Search vendor "Mit" for product "Kerberos 5" and version "1.6"
-
Affected
Mit
Search vendor "Mit"
 Kerberos 5
Search vendor "Mit" for product "Kerberos 5"
 1.6.1
Search vendor "Mit" for product "Kerberos 5" and version "1.6.1"
-
Affected
Mit
Search vendor "Mit"
 Kerberos 5
Search vendor "Mit" for product "Kerberos 5"
 1.6.2
Search vendor "Mit" for product "Kerberos 5" and version "1.6.2"
-
Affected