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Vulnerability record · CVE-2007-4743 · published 6 September 2007

CVE-2007-4743: Mit kerberos 5 memory buffer overflow vulnerability

Mit · Kerberos 5

The 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 Kerberos administration daemon (kadmind) and other applications that use krb5, does not correctly check the buffer length in some environments and architectures, which might allow remote attackers to conduct a buffer overflow attack.

10.0 CVSS 2.0 High EPSS 4.6% · top 8.6% CWE-119 · Memory buffer overflow
10.0CVSS 2.0 base score
4.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
34References
16 Jun 2026Last modified by NVD

Description

The 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 Kerberos administration daemon (kadmind) and other applications that use krb5, does not correctly check the buffer length in some environments and architectures, which might allow remote attackers to conduct a buffer overflow attack.

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

Affected products

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

References

LinkTags
http://article.gmane.org/gmane.comp.encryption.kerberos.announce/86 Patch
http://docs.info.apple.com/article.html?artnum=307041
http://lists.apple.com/archives/security-announce/2007/Nov/msg00002.html
http://secunia.com/advisories/26699
http://secunia.com/advisories/26987
http://secunia.com/advisories/27643
http://www.debian.org/security/2007/dsa-1387
http://www.novell.com/linux/security/advisories/2007_19_sr.html
http://www.redhat.com/support/errata/RHSA-2007-0892.html
http://www.securityfocus.com/archive/1/478748/100/0/threaded
http://www.securityfocus.com/archive/1/478794/100/0/threaded
http://www.securityfocus.com/bid/26444
http://www.ubuntu.com/usn/usn-511-2
http://www.us-cert.gov/cas/techalerts/TA07-319A.html US Government Resource
http://www.vupen.com/english/advisories/2007/3868
https://issues.rpath.com/browse/RPL-1696
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10239
http://article.gmane.org/gmane.comp.encryption.kerberos.announce/86 Patch
http://docs.info.apple.com/article.html?artnum=307041
http://lists.apple.com/archives/security-announce/2007/Nov/msg00002.html
http://secunia.com/advisories/26699
http://secunia.com/advisories/26987
http://secunia.com/advisories/27643
http://www.debian.org/security/2007/dsa-1387
http://www.novell.com/linux/security/advisories/2007_19_sr.html
http://www.redhat.com/support/errata/RHSA-2007-0892.html
http://www.securityfocus.com/archive/1/478748/100/0/threaded
http://www.securityfocus.com/archive/1/478794/100/0/threaded
http://www.securityfocus.com/bid/26444
http://www.ubuntu.com/usn/usn-511-2
http://www.us-cert.gov/cas/techalerts/TA07-319A.html US Government Resource
http://www.vupen.com/english/advisories/2007/3868
https://issues.rpath.com/browse/RPL-1696
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10239

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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-2009-4212Mit kerberos vulnerabilityMultiple 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,…EPSS 7.6%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-2007-3999Mit 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-2007-4743), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.