Improper Handling of Exceptional Conditions

Affecting busybox package, versions <1.30.1-r5

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NVD Description

Note: Versions mentioned in the description apply to the upstream busybox package. See Remediation section below for Alpine:3.10 relevant versions.

decompress_gunzip.c in BusyBox through 1.32.1 mishandles the error bit on the huft_build result pointer, with a resultant invalid free or segmentation fault, via malformed gzip data.

Remediation

Upgrade Alpine:3.10 busybox to version 1.30.1-r5 or higher.

References

CVSS Score

7.5
high severity
  • Attack Vector
    Network
  • Attack Complexity
    Low
  • Privileges Required
    None
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    None
  • Integrity
    None
  • Availability
    High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVE
CVE-2021-28831
CWE
CWE-755
Snyk ID
SNYK-ALPINE310-BUSYBOX-1090151
Disclosed
19 Mar, 2021
Published
31 Mar, 2021