CVE-2017-20006

HIGH
Published Jul 1, 20215y ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Jul 1, 2021 5y ago
Last Modified Jun 17, 2026 1w ago

Description

UnRAR 5.6.1.2 and 5.6.1.3 has a heap-based buffer overflow in Unpack::CopyString (called from Unpack::Unpack5 and CmdExtract::ExtractCurrentFile).

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-787 Out-of-bounds Write Memory Safety

Affected Products 3

VendorProductVersionRange
rarlabunrar5.6.1.2any
rarlabunrar5.6.1.3any
linuxlinux_kernel*any

References 3

  • bugs.chromium.org https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=4373
    ExploitIssue TrackingPatchThird Party Advisory
  • github.com https://github.com/aawc/unrar/commit/0ff832d31470471803b175cfff4e40c1b08ee779
    PatchThird Party Advisory
  • github.com https://github.com/google/oss-fuzz-vulns/blob/main/vulns/unrar/OSV-2017-104.yaml
    Third Party Advisory

Remediation

  • bugs.chromium.org https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=4373
    ExploitIssue TrackingPatchThird Party Advisory
  • github.com https://github.com/aawc/unrar/commit/0ff832d31470471803b175cfff4e40c1b08ee779
    PatchThird Party Advisory