|
X.org X11 Multiple Vulnerabilities
|
|
Secunia Advisory:
|
SA30627
|
|
|
Release Date:
|
2008-06-12
|
|
Popularity:
|
6,642 views
|
|
|
Critical:
|
Less critical
|
|
Impact:
|
Exposure of sensitive information
Privilege escalation
DoS
|
|
Where:
|
Local system
|
|
Solution Status:
|
Vendor Patch
|
|
| Software: | X Window System 11 (X11) 6.x
X Window System 11 (X11) 7.x
|
|
|
Secunia CVSS-2 Score:
|
Available in Secunia business solutions 
|
|
|
Subscribe:
|
Instant alerts on relevant vulnerabilities
|
|
| Advisory Content (Page 1 of 3) | [ 1 ] [ 2 ] [ 3 ] | |
|
Description:
Some vulnerabilities have been reported in X.org X11, which can be exploited by malicious, local users to cause a DoS (Denial of Service), disclose potentially sensitive information, or to gain escalated privileges.
1) An integer overflow error when calculating the size of the glyph exists in the "AllocateGlyph()" function within the Render extension. This can be exploited to cause a heap-based buffer overflow via a specially crafted request.
2) An integer overflow error when calculating the size of the glyph in the "ProcRenderCreateCursor()" function within the Render extension can be exploited to crash the X server via a specially crafted request.
3) An integer overflow error exists in the Render extension when parsing client requests for the "SProcRenderCreateLinearGradient", "SProcRenderCreateRadialGradient", or "SProcRenderCreateConicalGradient" functions and can be exploited to corrupt heap memory.
4) Multiple input validation errors in the "SProcSecurityGenerateAuthorization()", "SProcRecordCreateContext()", and "SProcRecordRegisterClients()" functions within the Record and Security extensions can be exploited to corrupt heap memory via specially crafted requests.
Successful exploitation of vulnerabilities #1, #3, and #4 may allow execution of arbitrary code with privileges of the X server (typically root).
5) An integer overflow error when processing parameters to the "ShmPutImage()" request can be exploited to disclose arbitrary memory of the X server process.
The vulnerabilities are reported in X.org X11 version R7.3. Other versions may also be affected.
Change Page:
[ 1 ] [ 2 ] [ 3 ]
|
|
|
Track this Secunia Advisory
|
Customers of the Secunia Vulnerability Intelligence solutions will automatically receive updates when new information regarding this advisory is released.
Read more about our Vulnerability Intelligence solutions and what they can do for you and your company.
|
|
|
About this Secunia Advisory
|
Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
|
