Out-of-bounds Write Affecting kernel-uek-debug package, versions <0:2.6.39-400.297.12.el5uek


Severity

0.0
high
0
10

    Threat Intelligence

    EPSS
    0.04% (13th percentile)

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  • Snyk ID SNYK-ORACLE5-KERNELUEKDEBUG-2522693
  • published 10 Apr 2022
  • disclosed 17 Jul 2017

How to fix?

Upgrade Oracle:5 kernel-uek-debug to version 0:2.6.39-400.297.12.el5uek or higher.
This issue was patched in ELSA-2017-3637.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek-debug package and not the kernel-uek-debug package as distributed by Oracle. See How to fix? for Oracle:5 relevant fixed versions and status.

Linux drivers/char/lp.c Out-of-Bounds Write. Due to a missing bounds check, and the fact that parport_ptr integer is static, a 'secure boot' kernel command line adversary (can happen due to bootloader vulns, e.g. Google Nexus 6's CVE-2016-10277, where due to a vulnerability the adversary has partial control over the command line) can overflow the parport_nr array in the following code, by appending many (>LP_NO) 'lp=none' arguments to the command line.

CVSS Scores

version 3.1
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Snyk

7.8 high
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
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NVD

7.8 high
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Red Hat

4.6 medium