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Improper Handling of Syntactically Invalid Structure Affecting kernel-bootwrapper package, versions <0:3.10.0-514.el7

Severity

 Recommended
high

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.05% (24th percentile)

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  • Snyk ID SNYK-RHEL7-KERNELBOOTWRAPPER-4655487
  • published 26 Jul 2021
  • disclosed 25 Jan 2016
Report a new vulnerability Found a mistake?

Introduced: 25 Jan 2016

CVE-2016-2053 Open this link in a new tab
CWE-228 Open this link in a new tab

How to fix?

Upgrade RHEL:7 kernel-bootwrapper to version 0:3.10.0-514.el7 or higher.
This issue was patched in RHSA-2016:2574.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-bootwrapper package and not the kernel-bootwrapper package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

The asn1_ber_decoder function in lib/asn1_decoder.c in the Linux kernel before 4.3 allows attackers to cause a denial of service (panic) via an ASN.1 BER file that lacks a public key, leading to mishandling by the public_key_verify_signature function in crypto/asymmetric_keys/public_key.c.

References

CVSS Scores

version 3.1
Expand this section

Red Hat

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