CVE-2011-0654

Integer underflow in the BowserWriteErrorLogEntry function in the Common Internet File System (CIFS) browser service in Mrxsmb.sys or bowser.sys in Active…

published February 16, 2011

Patch now

High probability of exploitation

NVD has not assigned a CVSS score to this record. It sits in the 99.3th percentile for exploit probability.

CVSS
—
EPSS
68%
Percentile
99.3
In the wild
Unconfirmed
What it is

⚠️ An integer underflow is lurking in the CIFS browser service of Windows, ready to unleash chaos! Just a malformed message can lead to remote code execution or a system crash. 🔥 Think of it like a restaurant where an unexpected guest tries to book a table, and the booking system miscalculates the available spots — the overflow leads to everyone being booted out! If exploited, this vulnerability could allow an attacker to execute arbitrary code or even crash your entire system. It's like a sudden fire drill that throws everything into disarray, leaving your data at risk and your users frustrated!

Put simply

Think of it like a restaurant where an unexpected guest tries to book a table, and the booking system miscalculates the available spots — the overflow leads to everyone being booted out! This vulnerability arises from an integer underflow in the BowserWriteErrorLogEntry function of CIFS, causing a heap-based buffer overflow triggered by a malformed BROWSER ELECTION message.

What to do

If exploited, this vulnerability could allow an attacker to execute arbitrary code or even crash your entire system. It's like a sudden fire drill that throws everything into disarray, leaving your data at risk and your users frustrated! To mitigate this risk, ensure that systems are updated to the latest patches available for your version of Windows. Review access controls and monitor your network for any suspicious message patterns. Regular audits can help catch potential vulnerabilities early! You’ve got this! Stay vigilant and proactive, and you’ll keep your systems safe and sound! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.68084 · 99.3th percentile
Published
2011-02-16T00:00Z
EPSS history
Timeline
  • 16 FEB 00:00Z
    Integer underflow in the BowserWriteErrorLogEntry function in the Common Internet File System (CIFS) browser service in Mrxsmb.sys or bowser.sys in Active…
    cvelistv5