CVE-2008-0027

Heap-based buffer overflow in the Certificate Trust List (CTL) Provider service (CTLProvider.exe) in Cisco Unified Communications Manager (CUCM) 4.2 before…

published January 17, 2008

Patch now

High probability of exploitation

NVD has not assigned a CVSS score to this record. It sits in the 99.1th percentile for exploit probability.

CVSS
—
EPSS
57%
Percentile
99.1
In the wild
Unconfirmed
What it is

⚠️ This vulnerability allows a remote attacker to potentially bring down your Cisco Unified Communications Manager with just a long request! Think of it like overstuffing a suitcase — if you cram in too many clothes, the zipper breaks, and it becomes unusable. Similarly, this buffer overflow can cause your CTL Provider service to crash or misbehave. An attacker can exploit this buffer overflow to either cause a denial of service, leaving your communication systems incapacitated, or even execute arbitrary code remotely, potentially taking full control of the system! The effect can ripple through your organization, disrupting critical communications and operations.

Put simply

Think of it like overstuffing a suitcase — if you cram in too many clothes, the zipper breaks, and it becomes unusable. Similarly, this buffer overflow can cause your CTL Provider service to crash or misbehave. The heap-based buffer overflow in the CTL Provider service (CTLProvider.exe) in various versions of Cisco Unified Communications Manager allows attackers to send overly long requests, which can lead to crashes or arbitrary code execution.

What to do

An attacker can exploit this buffer overflow to either cause a denial of service, leaving your communication systems incapacitated, or even execute arbitrary code remotely, potentially taking full control of the system! The effect can ripple through your organization, disrupting critical communications and operations. To remediate, upgrade to versions 4.2(3)SR3, 4.3(1)SR1, or 4.1(3)SR5c, depending on your current version. Regularly monitor your systems and consider implementing input validation to prevent similar issues in the future. You've got this! By updating your systems, you'll be on your way to ensuring a robust and secure communication environment. 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.57108 · 99.1th percentile
Published
2008-01-17T02:00Z
EPSS history
Timeline
  • 17 JAN 02:00Z
    Heap-based buffer overflow in the Certificate Trust List (CTL) Provider service (CTLProvider.exe) in Cisco Unified Communications Manager (CUCM) 4.2 before…
    cvelistv5