CVE-2007-4990

High

Description

The swap_char2b function in X.Org X Font Server (xfs) before 1.0.5 allows context-dependent attackers to execute arbitrary code via (1) QueryXBitmaps and (2) QueryXExtents protocol requests with crafted size values that specify an arbitrary number of bytes to be swapped on the heap, which triggers heap corruption.

SeverityHigh

CVSS7.5

Exploit probability—

ProductX.org X Font Server

PublishedOct 5, 2007

First seenOct 5, 2007

How to fix

Vendor advisories

redhat.com/archives/fedora-package-announce/2007-December/msg00352.html

Affected products

Product	Affected versions	Fixed in
x.org x_font_server	v ≤ 1.0.4	—

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.