CVE-2021-21899: Buffer Overflow
First published: Fri Nov 19 2021(Updated: )
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.
Credit: talos-cna@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/librecad | 2.1.3-1.2+deb10u1 2.1.3-1.3+deb11u1 2.2.0-1 | |
| LibreCad libdxfrw | =2.2.0-rc2-19-ge02f3580 | |
| Fedoraproject Fedora | =34 | |
| Fedoraproject Fedora | =35 | |
| Debian Debian Linux | =9.0 | |
| Debian Debian Linux | =10.0 | |
| Debian Debian Linux | =11.0 |
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Reference Links
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1350
- https://github.com/LibreCAD/libdxfrw/commit/6417118874333309aa10c4e59f954c3905a6e8b5
- https://security-tracker.debian.org/tracker/CVE-2021-21899
- https://lists.debian.org/debian-lts-announce/2021/12/msg00002.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RDI3HCTCACMIC7I4ILB3NRU6DCMADI5H/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZTIAMP7QJDKV4ADDLR4GVVX2TXYLHVOZ/
- https://security.gentoo.org/glsa/202305-26
- https://www.debian.org/security/2022/dsa-5077
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RDI3HCTCACMIC7I4ILB3NRU6DCMADI5H/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZTIAMP7QJDKV4ADDLR4GVVX2TXYLHVOZ/
- collector/security-tracker-debian
- collector/nvd-index
- agent/author
- agent/severity
- agent/references
- agent/type
- agent/description
- agent/event
- agent/first-publish-date
- agent/softwarecombine
- agent/last-modified-date
- agent/weakness
- agent/tags
- collector/mitre-cve
- source/MITRE
- package-manager/debian
- vendor/librecad
- canonical/librecad libdxfrw
- version/librecad libdxfrw/2.2.0-rc2-19-ge02f3580
- vendor/fedoraproject
- canonical/fedoraproject fedora
- version/fedoraproject fedora/34
- version/fedoraproject fedora/35
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/9.0
- version/debian debian linux/10.0
- version/debian debian linux/11.0