Heap Corruption in X.Org X Font Server Affects Multiple Versions
CVE-2007-4990

Currently unrated

Key Information:

Vendor: X.org
Status: X Font Server
Vendor: CVE Published:; 5 October 2007

What is CVE-2007-4990?

The swap_char2b function in the X.Org X Font Server prior to version 1.0.5 is vulnerable to heap corruption. This vulnerability can be exploited by sophisticated attackers sending crafted QueryXBitmaps and QueryXExtents protocol requests, with manipulated size values. Such exploits can lead to arbitrary code execution in the context of the server, potentially allowing attackers to execute malicious code remotely and compromise system integrity.

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