CVE-2002-0059

The decompression algorithm in zlib 1.1.3 and earlier, as used in many different utilities and packages, causes inflateEnd to release certain memory more than…

published June 25, 2002

CVSS
—
EPSS
10%
Percentile
95.5
In the wild
Unconfirmed
What it is

⚠️ A double free in zlib? It sounds like a party gone wild—where memory gets released more than once, causing all sorts of chaos! Think of it as a restaurant where the waiter accidentally serves the same dish twice, creating confusion in the kitchen. This can lead to unexpected results, like having too many orders and not enough plates to serve them! If a local or remote attacker takes advantage of this double free vulnerability, they could potentially execute arbitrary code. This could mean gaining control over the system or causing the application to behave unpredictably, resulting in a security nightmare!

Put simply

Think of it as a restaurant where the waiter accidentally serves the same dish twice, creating confusion in the kitchen. This can lead to unexpected results, like having too many orders and not enough plates to serve them! The vulnerability occurs in zlib 1.1.3 and earlier versions, where the inflateEnd function mishandles memory, allowing attackers to exploit a crafted block of malformed compression data to execute malicious code.

What to do

If a local or remote attacker takes advantage of this double free vulnerability, they could potentially execute arbitrary code. This could mean gaining control over the system or causing the application to behave unpredictably, resulting in a security nightmare! To safeguard your systems, upgrade zlib to a later version where this issue is resolved. Regularly audit your applications for outdated libraries and ensure proper memory management practices are followed to mitigate risks. You've got this! Start with that upgrade, and together we'll keep those systems secure! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.09691 · 95.5th percentile
Published
2002-06-25T04:00Z
EPSS history
Timeline
  • 25 JUN 04:00Z
    The decompression algorithm in zlib 1.1.3 and earlier, as used in many different utilities and packages, causes inflateEnd to release certain memory more than…
    cvelistv5