Vulnerability Name:

CVE-2021-21897 (CCN-208776)

Assigned:2021-09-07
Published:2021-09-07
Updated:2022-10-28
Summary:A code execution vulnerability exists in the DL_Dxf::handleLWPolylineData functionality of Ribbonsoft dxflib 3.17.0. A specially-crafted .dxf file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.
CVSS v3 Severity:8.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
7.9 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
8.8 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
7.9 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:6.8 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
9.0 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-191
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2021-21897

Source: XF
Type: UNKNOWN
dxflib-cve202121897-bo(208776)

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20220607 [SECURITY] [DLA 3046-1] librecad security update

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2022-9d17930140

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2022-635599924b

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2022-8d01b8b6d3

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2022-9cbdf39a5a

Source: CCN
Type: Talos Vulnerability Report TALOS-2021-1346
Ribbonsoft dxflib DL_Dxf::handleLWPolylineData heap-based buffer overflow vulnerability

Source: MISC
Type: Exploit, Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1346

Source: CCN
Type: QCAD Web site
dxflib

Vulnerable Configuration:Configuration 1:
  • cpe:/a:ribbonsoft:dxflib:3.17.0:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/a:fedoraproject:extra_packages_for_enterprise_linux:8.0:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:35:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:36:*:*:*:*:*:*:*
  • OR cpe:/a:fedoraproject:extra_packages_for_enterprise_linux:7.0:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:37:*:*:*:*:*:*:*

    • Configuration 3:
  • cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:112179
    P
    		dxflib-devel-3.26.4-1.1 on GA media (Moderate)
    2022-01-17
    oval:org.opensuse.security:def:105711
    P
    		dxflib-devel-3.26.4-1.1 on GA media (Moderate)
    2021-10-01
    BACK
    ribbonsoft dxflib 3.17.0
    fedoraproject extra packages for enterprise linux 8.0
    fedoraproject fedora 35
    fedoraproject fedora 36
    fedoraproject extra packages for enterprise linux 7.0
    fedoraproject fedora 37
    debian debian linux 9.0