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TalosCVE-2021-21899

HistoryNov 19, 2021 - 7:15 p.m.

CVE-2021-21899

2021-11-1919:15:08

CWE-119

CWE-787

talos

web.nvd.nist.gov

code execution

vulnerability

librecad

libdxfrw

heap buffer overflow

dwg

nvd

cve-2021-21899

CVSS2

6.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

AI Score

8.7

Confidence

High

EPSS

0.009

Percentile

83.0%

JSON

A code execution vulnerability exists in the dwgCompressor::copyCompBytes21 functionality of LibreCad libdxfrw 2.2.0-rc2-19-ge02f3580. A specially-crafted .dwg file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.

Affected configurations

Nvd

Vulners

Node

librecadlibdxfrwMatch2.2.0-rc2-19-ge02f3580

Node

fedoraprojectfedoraMatch34

fedoraprojectfedoraMatch35

Node

debiandebian_linuxMatch9.0

debiandebian_linuxMatch10.0

debiandebian_linuxMatch11.0

VendorProductVersionCPE
librecadlibdxfrw2.2.0-rc2-19-ge02f3580cpe:2.3:a:librecad:libdxfrw:2.2.0-rc2-19-ge02f3580:*:*:*:*:*:*:*
fedoraprojectfedora34cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
fedoraprojectfedora35cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
debiandebian_linux9.0cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
debiandebian_linux10.0cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
debiandebian_linux11.0cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
librecad	libdxfrw	2.2.0-rc2-19-ge02f3580	cpe:2.3:a:librecad:libdxfrw:2.2.0-rc2-19-ge02f3580:::::::*
fedoraproject	fedora	34	cpe:2.3:o:fedoraproject:fedora:34:::::::*
fedoraproject	fedora	35	cpe:2.3:o:fedoraproject:fedora:35:::::::*
debian	debian_linux	9.0	cpe:2.3:o:debian:debian_linux:9.0:::::::*
debian	debian_linux	10.0	cpe:2.3:o:debian:debian_linux:10.0:::::::*
debian	debian_linux	11.0	cpe:2.3:o:debian:debian_linux:11.0:::::::*

CNA Affected

[
  {
    "vendor": "n/a",
    "product": "LibreCAD",
    "versions": [
      {
        "version": "LibreCad libdxfrw 2.2.0-rc2-19-ge02f3580",
        "status": "affected"
      }
    ]
  }
]