CVE-2007-4743 Memory corruption in n/a

Critical 10.0 Published 6 Sep 2007 Updated 7 Aug 2024

Remote attackers can exploit a buffer overflow in the MIT Kerberos RPC library to execute arbitrary code via the Kerberos administration daemon.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2007-4743?

CVE-2007-4743 is a critical memory corruption vulnerability in Mit Kerberos 5, published on 6 Sep 2007. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-119

Which versions are affected by CVE-2007-4743?

It affects 1 product.

Linux distribution packages (14)

`krb5` Red Hat:enterprise_linux:5::client	All versions	`0:1.5-29`
`krb5-debuginfo` Red Hat:enterprise_linux:5::client	All versions	`0:1.5-29`
`krb5-libs` Red Hat:enterprise_linux:5::client	All versions	`0:1.5-29`
`krb5-workstation` Red Hat:enterprise_linux:5::client	All versions	`0:1.5-29`
`krb5` Red Hat:enterprise_linux:5::client_workstation	All versions	`0:1.5-29`
`krb5-debuginfo` Red Hat:enterprise_linux:5::client_workstation	All versions	`0:1.5-29`
`krb5-devel` Red Hat:enterprise_linux:5::client_workstation	All versions	`0:1.5-29`
`krb5-server` Red Hat:enterprise_linux:5::client_workstation	All versions	`0:1.5-29`
`krb5` Red Hat:enterprise_linux:5::server	All versions	`0:1.5-29`
`krb5-debuginfo` Red Hat:enterprise_linux:5::server	All versions	`0:1.5-29`
`krb5-devel` Red Hat:enterprise_linux:5::server	All versions	`0:1.5-29`
`krb5-libs` Red Hat:enterprise_linux:5::server	All versions	`0:1.5-29`
`krb5-server` Red Hat:enterprise_linux:5::server	All versions	`0:1.5-29`
`krb5-workstation` Red Hat:enterprise_linux:5::server	All versions	`0:1.5-29`

Products include Mit Kerberos 5.

How do I fix CVE-2007-4743?

Apply the vendor's patch.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2007-4743 being exploited?

There is no known exploitation of CVE-2007-4743 in the wild and no public exploit code.

All Mit Kerberos 5 vulnerabilities

Sources

Also known as DEBIAN-CVE-2007-4743, DSA-1387-1, GHSA-2pm5-h4rp-cjq3, RHSA-2007:0892.