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Fencer Intel
high 7.8

CVE-2021-45342 json

A buffer overflow vulnerability in CDataList of the jwwlib component of LibreCAD 2.2.0-rc3 and older allows an attacker to achieve Remote C…

published 4y ago modified 4mo ago also EUVD-2021-32115

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.9%
EPSS 1.9% chance of exploitation in 30 days, percentile 80%
public exploits
0
none known

Summary

A buffer overflow vulnerability in CDataList of the jwwlib component of LibreCAD 2.2.0-rc3 and older allows an attacker to achieve Remote Code Execution using a crafted JWW document.

Patch / fix

  • librecad Debian 14, Debian 13, Debian 12 2.1.3-3

debian advisories DEBIAN-CVE-2021-45342

  • librecad Ubuntu 18.04 LTS 2.1.2-1ubuntu0.1
  • librecad Ubuntu 20.04 LTS 2.1.3-1.2+deb10u1build0.20.04.1
  • librecad Ubuntu 22.04 LTS 2.1.3-3
  • librecad Ubuntu Pro 16.04 LTS 2.0.9-2ubuntu0.1~esm1
  • librecad Ubuntu Pro 18.04 LTS 2.1.2-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2021-45342

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • librecad openSUSE Tumbleweed 2.2.0~rc3-7.1
  • librecad Package Hub 15 SP4, openSUSE Leap 15.4 2.2.0~rc3-bp154.3.3.1
  • libdxfrw Package Hub 15 SP4, openSUSE Leap 15.4 1.0.1+git.20220109-bp154.2.3.1
  • librecad Package Hub 15 SP3, openSUSE Leap 15.3 2.2.0~rc3-bp153.2.9.1

opensuse advisories openSUSE-SU-2024:12082-1openSUSE-SU-2022:10002-1openSUSE-SU-2022:0143-1

Is CVE-2021-45342 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-45342 updated cvss 8.8

librecad: buffer overflow in CDataList of the jwwlib component allows remote code execution via a crafted JWW document

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.93% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/LibreCAD/LibreCAD/issues/1464 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-120 Buffer Copy without Checking Size of Input

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.