CVE-2007-5939

The gss_userok function in appl/ftp/ftpd/gss_userok.c in Heimdal 0.7.2 does not allocate memory for the ticketfile pointer before calling free, which allows…

published December 6, 2007

CVSS
—
EPSS
4%
Percentile
89.9
In the wild
Unconfirmed
What it is

⚠️ A sneaky pointer problem could lead to unexpected outcomes! The gss_userok function in Heimdal 0.7.2 is missing memory allocation for its ticketfile, creating a potential mess with invalid usernames. 🔍 Think of this like a restaurant that takes food orders without checking if the kitchen has enough ingredients. If someone orders a dish using a wrong name, the kitchen might just throw in whatever they find, leading to unexpected (and possibly unappetizing) results! This vulnerability could allow a remote attacker to exploit the gap, possibly leading to undefined behavior or system instability. While specifics remain murky, the potential for chaos is definitely there, so it’s a situation best not left unattended!

Put simply

Think of this like a restaurant that takes food orders without checking if the kitchen has enough ingredients. If someone orders a dish using a wrong name, the kitchen might just throw in whatever they find, leading to unexpected (and possibly unappetizing) results! In Heimdal 0.7.2, the gss_userok function fails to properly allocate memory for the ticketfile pointer before calling free, which could lead to unintended consequences when an invalid username is provided.

What to do

This vulnerability could allow a remote attacker to exploit the gap, possibly leading to undefined behavior or system instability. While specifics remain murky, the potential for chaos is definitely there, so it’s a situation best not left unattended! To safeguard your systems, consider updating to a more recent version of Heimdal if available. Additionally, reviewing your usage of this function in your applications could help identify potential exposure points. Always ensure proper memory management practices are in place! You've got this! With a few careful steps, you can firm up your defenses and keep those unexpected surprises at bay! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.03796 · 89.9th percentile
Published
2007-12-06T15:00Z
EPSS history
Timeline
  • 06 DEC 15:00Z
    The gss_userok function in appl/ftp/ftpd/gss_userok.c in Heimdal 0.7.2 does not allocate memory for the ticketfile pointer before calling free, which allows…
    cvelistv5