// For flags

CVE-2013-6425

pixman: integer underflow when handling trapezoids

Severity Score

7.5
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Integer underflow in the pixman_trapezoid_valid macro in pixman.h in Pixman before 0.32.0, as used in X.Org server and cairo, allows context-dependent attackers to cause a denial of service (crash) via a negative bottom value.

Desbordamiento de entero en la macro pixman_trapezoid_valid en pixman.h de Pixman anteriores a 0.32.0, utilizado en el servidor X.Org y cairo, permite a atacantes dependientes de contexto causar una denegación de servicio (crash) a través de un valor mínimo negativo.

Pixman is a pixel manipulation library for the X Window System and Cairo. An integer overflow, which led to a heap-based buffer overflow, was found in the way pixman handled trapezoids. If a remote attacker could trick an application using pixman into rendering a trapezoid shape with specially crafted coordinates, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. Users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. All applications using pixman must be restarted for this update to take effect.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2013-11-04 CVE Reserved
  • 2013-12-19 CVE Published
  • 2024-08-06 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-190: Integer Overflow or Wraparound
  • CWE-191: Integer Underflow (Wrap or Wraparound)
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Pixman
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Pixman
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< 0.32.0
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-
Affected
Canonical
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Ubuntu Linux
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12.04
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esm
Affected
Canonical
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Ubuntu Linux
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12.10
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-
Affected
Canonical
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Ubuntu Linux
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13.04
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-
Affected
Canonical
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Ubuntu Linux
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13.10
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-
Affected
Debian
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Debian Linux
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6.0
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-
Affected
Debian
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Debian Linux
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7.0
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-
Affected
Redhat
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Enterprise Linux Desktop
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5.0
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-
Affected
Redhat
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Enterprise Linux Desktop
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6.0
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-
Affected
Redhat
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Enterprise Linux Eus
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6.5
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-
Affected
Redhat
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Enterprise Linux Server
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5.0
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Affected
Redhat
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Enterprise Linux Server
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6.0
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-
Affected
Redhat
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Enterprise Linux Server Aus
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6.5
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-
Affected
Redhat
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Enterprise Linux Server Tus
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6.5
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Affected
Redhat
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Enterprise Linux Workstation
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5.0
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Affected
Redhat
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Enterprise Linux Workstation
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6.0
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-
Affected
Opensuse
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Opensuse
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11.4
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-
Affected
Opensuse
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Opensuse
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12.2
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Affected
Opensuse
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Opensuse
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12.3
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-
Affected
Opensuse
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Opensuse
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13.1
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-
Affected