CVE-2007-4990 : The swap_char2b function in X.Org X Font Server (xfs) before 1.0.5 allows contex

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.

Published 2007-10-05 21:17:00

Updated 2018-10-15 21:39:27

Source MITRE

View at NVD, CVE.org

Vulnerability category: Execute code

Products affected by CVE-2007-4990

X.org » X Font Server
Versions up to, including, (<=) 1.0.4
cpe:2.3:a:x.org:x_font_server:*:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2007-4990

EPSS FAQ

3.48%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 92 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2007-4990

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source	First Seen
7.5	HIGH	AV:N/AC:L/Au:N/C:P/I:P/A:P	10.0	6.4	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial

CWE ids for CVE-2007-4990

CWE-189

Assigned by: nvd@nist.gov (Primary)

Vendor statements for CVE-2007-4990

Red Hat 2007-10-08

Red Hat is aware of this issue and is tracking it via the following bug: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=CVE-2007-4990 The Red Hat Security Response Team has rated this issue as having low security impact, a future update may address this flaw.

References for CVE-2007-4990