Use After Free Affecting bsdcpio package, versions <0:3.1.2-12.el7


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
1.55% (81st percentile)

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  • Snyk IDSNYK-RHEL7-BSDCPIO-4938944
  • published26 Jul 2021
  • disclosed20 Nov 2018

Introduced: 20 Nov 2018

CVE-2018-1000877  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade RHEL:7 bsdcpio to version 0:3.1.2-12.el7 or higher.
This issue was patched in RHSA-2019:2298.

NVD Description

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

libarchive version commit 416694915449219d505531b1096384f3237dd6cc onwards (release v3.1.0 onwards) contains a CWE-415: Double Free vulnerability in RAR decoder - libarchive/archive_read_support_format_rar.c, parse_codes(), realloc(rar->lzss.window, new_size) with new_size = 0 that can result in Crash/DoS. This attack appear to be exploitable via the victim must open a specially crafted RAR archive.

References

CVSS Base Scores

version 3.1