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Vulnerability record · CVE-2009-4212 · published 13 January 2010

CVE-2009-4212: Mit kerberos vulnerability

Mit · Kerberos

Multiple integer underflows in the (1) AES and (2) RC4 decryption functionality in the crypto library in MIT Kerberos 5 (aka krb5) 1.3 through 1.6.3, and 1.7 before 1.7.1, allow remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code by providing ciphertext with a length that is too short to be valid.

10.0 CVSS 2.0 High EPSS 7.6% · top 5.7% CWE-189 · CWE-189
10.0CVSS 2.0 base score
7.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
62References
16 Jun 2026Last modified by NVD

Description

Multiple integer underflows in the (1) AES and (2) RC4 decryption functionality in the crypto library in MIT Kerberos 5 (aka krb5) 1.3 through 1.6.3, and 1.7 before 1.7.1, allow remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code by providing ciphertext with a length that is too short to be valid.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.apple.com/archives/security-announce/2010//Jun/msg00001.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-January/033915.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-January/033919.html
http://marc.info/?l=bugtraq&m=130497213107107&w=2
http://secunia.com/advisories/38080
http://secunia.com/advisories/38108
http://secunia.com/advisories/38126
http://secunia.com/advisories/38140
http://secunia.com/advisories/38184
http://secunia.com/advisories/38203
http://secunia.com/advisories/38696
http://secunia.com/advisories/40220
http://sunsolve.sun.com/search/document.do?assetkey=1-66-275530-1
http://sunsolve.sun.com/search/document.do?assetkey=1-77-1021779.1-1
http://support.apple.com/kb/HT4188
http://support.avaya.com/css/P8/documents/100074869
http://ubuntu.com/usn/usn-881-1
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2009-004.txt PatchVendor Advisory
http://www.debian.org/security/2010/dsa-1969
http://www.mandriva.com/security/advisories?name=MDVSA-2010:006
http://www.securityfocus.com/bid/37749
http://www.securitytracker.com/id?1023440
http://www.vupen.com/english/advisories/2010/0096
http://www.vupen.com/english/advisories/2010/0129
http://www.vupen.com/english/advisories/2010/1481
https://bugzilla.redhat.com/show_bug.cgi?id=545015 Patch
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11272
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7357
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8192
https://rhn.redhat.com/errata/RHSA-2010-0029.html
https://rhn.redhat.com/errata/RHSA-2010-0095.html
http://lists.apple.com/archives/security-announce/2010//Jun/msg00001.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-January/033915.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-January/033919.html
http://marc.info/?l=bugtraq&m=130497213107107&w=2
http://secunia.com/advisories/38080
http://secunia.com/advisories/38108
http://secunia.com/advisories/38126
http://secunia.com/advisories/38140
http://secunia.com/advisories/38184

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2011-0285Mit kerberos 5 improper input validation vulnerabilityThe process_chpw_request function in schpw.c in the password-changing functionality in kadmind in MIT Kerberos 5 (aka krb5) 1.7 through 1.9 frees an …EPSS 21%10.0CVE-2009-0846Mit kerberos 5 vulnerabilityThe asn1_decode_generaltime function in lib/krb5/asn.1/asn1_decode.c in the ASN.1 GeneralizedTime decoder in MIT Kerberos 5 (aka krb5) before 1.6.4 a…EPSS 8.9%10.0CVE-2008-0947Mit kerberos 5 memory buffer overflow vulnerabilityBuffer overflow in the RPC library used by libgssrpc and kadmind in MIT Kerberos 5 (krb5) 1.4 through 1.6.3 allows remote attackers to execute arbitr…EPSS 8.8%10.0CVE-2007-5902Mit kerberos 5 vulnerabilityInteger overflow in the svcauth_gss_get_principal function in lib/rpc/svc_auth_gss.c in MIT Kerberos 5 (krb5) allows remote attackers to have an unkn…EPSS 5.9%10.0CVE-2007-4743Mit kerberos 5 memory buffer overflow vulnerabilityThe original patch for CVE-2007-3999 in svc_auth_gss.c in the RPCSEC_GSS RPC library in MIT Kerberos 5 (krb5) 1.4 through 1.6.2, as used by the Kerbe…EPSS 4.6%10.0CVE-2007-3999Mit kerberos 5 memory buffer overflow vulnerabilityStack-based buffer overflow in the svcauth_gss_validate function in lib/rpc/svc_auth_gss.c in the RPCSEC_GSS RPC library (librpcsecgss) in MIT Kerber…EPSS 11%10.0CVE-2007-2442Mit kerberos 5 vulnerabilityThe gssrpc__svcauth_gssapi function in the RPC library in MIT Kerberos 5 (krb5) 1.6.1 and earlier might allow remote attackers to execute arbitrary c…EPSS 11%10.0CVE-2007-0956Mit kerberos 5 missing authentication for critical function vulnerabilityThe telnet daemon (telnetd) in MIT krb5 before 1.6.1 allows remote attackers to bypass authentication and gain system access via a username beginning…EPSS 30%

Source: NIST National Vulnerability Database (record CVE-2009-4212), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.