CVE-2007-4743

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…

published September 6, 2007

CVSS
—
EPSS
5%
Percentile
91.6
In the wild
Unconfirmed
What it is

⚠️ A sneaky oversight in buffer handling lives in the RPCSEC_GSS library of MIT Kerberos 5, possibly allowing remote attackers to trigger a buffer overflow! Think of it like a waiter bringing out a massive dish without confirming the table's order—too much for the table can lead to a chaotic mess. In this case, a buffer overflow can let attackers spill data everywhere, creating a digital disaster. An attacker could exploit this vulnerability to overwrite memory, potentially gaining control over the affected system. While it hasn't been widely exploited yet, the risk is real and shouldn't be taken lightly as it could lead to unauthorized access and data loss.

Put simply

Think of it like a waiter bringing out a massive dish without confirming the table's order—too much for the table can lead to a chaotic mess. In this case, a buffer overflow can let attackers spill data everywhere, creating a digital disaster. The flaw lies in the incorrect length check of buffers in svc_auth_gss.c, which may allow for buffer overflow attacks in Kerberos 5 versions 1.4 through 1.6.2. This can make systems vulnerable if the underlying environment or architecture permits it.

What to do

An attacker could exploit this vulnerability to overwrite memory, potentially gaining control over the affected system. While it hasn't been widely exploited yet, the risk is real and shouldn't be taken lightly as it could lead to unauthorized access and data loss. To mitigate this risk, upgrade to a later version of MIT Kerberos that addresses this issue, ideally 1.6.3 or newer. Additionally, audit your applications that rely on this library and ensure that you are validating buffer lengths appropriately in your implementation. You've got this! With these steps, you'll be one step closer to securing your systems! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.04615 · 91.6th percentile
Published
2007-09-06T22:00Z
EPSS history
Timeline
  • 06 SEP 22:00Z
    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…
    cvelistv5