The NSPLookupServiceNext function in the client in Microsoft Forefront Threat Management Gateway (TMG) 2010 allows remote attackers to execu
Only affects Microsoft Forefront Threat Management Gateway 2010 Client on systems where the TMG firewall client is used. Microsoft rates it Critical. A security update fixes it.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Listed in CISA KEV
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Actively exploited
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
Microsoft Forefront Threat Management Gateway (TMG) 2010 and its firewall client component are affected. A remote attacker could exploit this flaw through specially crafted requests to run arbitrary code on the affected system.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
The NSPLookupServiceNext function in the client in Microsoft Forefront Threat Management Gateway (TMG) 2010 allows remote attackers to execute arbitrary code via vectors involving unspecified requests, aka "TMG Firewall Client Memory Corruption Vulnerability."
Timeline
- CVE published
- Added to CISA KEV
CISA has evidence of exploitation in the wild
- CISA remediation deadline
Due date for US federal agencies to patch
- Record last updated
- EPSS reached 10%
FIRST estimates at least a 10% chance of exploitation in the next 30 days
Affected versions
- n/a n/a
Version range not reported
References 6
securitytracker.com
docs.microsoft.com
exchange.xforce.ibmcloud.com
securityfocus.com
secunia.com
oval.cisecurity.org
Questions about CVE-2011-1889
What does this mean?
The NSPLookupServiceNext function in the client lacks proper bounds checking, which allows a remote attacker to execute code. An attacker who succeeds could take complete control of the affected system, install programs, view, change, or delete data, or create new accounts with full user rights.Source: learn.microsoft.com
Am I affected, and how do I check?
The issue is in Microsoft Forefront Threat Management Gateway 2010 Client and only applies on systems where the TMG firewall client is used. To check a system, confirm whether the TMG firewall client is installed and in use. The checked facts do not list specific affected version numbers.Source: learn.microsoft.com
What should I do about it?
Apply the Microsoft security update, which sets proper bounds on the NSPLookupServiceNext function. The checked facts do not name a specific fixed version.Source: learn.microsoft.com
Is it being exploited?
Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2022-03-03, which means it has evidence of attacks. No public exploit code is tracked.Source: cisa.gov, cve.now feed data
What if there's no patch?
The workaround is to disable the TMG 2010 Client on the system until the security update can be applied.Source: learn.microsoft.com