Out-of-bounds Write Affecting shim-ia32 package, versions <0:15.6-1.el8


Severity

0.0
high
0
10

    Threat Intelligence

    EPSS
    0.05% (18th percentile)

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  • Snyk ID SNYK-CENTOS8-SHIMIA32-2931247
  • published 9 Jun 2022
  • disclosed 7 Jun 2022

How to fix?

Upgrade Centos:8 shim-ia32 to version 0:15.6-1.el8 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream shim-ia32 package and not the shim-ia32 package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

Out-of-bounds write when handling split HTTP headers; When handling split HTTP headers, GRUB2 HTTP code accidentally moves its internal data buffer point by one position. This can lead to a out-of-bound write further when parsing the HTTP request, writing a NULL byte past the buffer. It's conceivable that an attacker controlled set of packets can lead to corruption of the GRUB2's internal memory metadata.

CVSS Scores

version 3.1
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Snyk

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

7 high
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SUSE

7 high
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Red Hat

7 high