Vulnerability Details : CVE-2021-21899
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.
Vulnerability category: OverflowMemory Corruption
Products affected by CVE-2021-21899
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
- cpe:2.3:a:librecad:libdxfrw:2.2.0-rc2-19-ge02f3580:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-21899
0.91%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 83 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-21899
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
|
8.8
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
Talos | |
|
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST |
CWE ids for CVE-2021-21899
-
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.Assigned by: talos-cna@cisco.com (Primary)
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Secondary)
References for CVE-2021-21899
-
https://www.debian.org/security/2022/dsa-5077
Debian -- Security Information -- DSA-5077-1 librecadThird Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZTIAMP7QJDKV4ADDLR4GVVX2TXYLHVOZ/
[SECURITY] Fedora 34 Update: libdxfrw-1.0.1-1.fc34 - package-announce - Fedora Mailing-ListsThird Party Advisory
-
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1350
TALOS-2021-1350 || Cisco Talos Intelligence Group - Comprehensive Threat IntelligenceExploit;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RDI3HCTCACMIC7I4ILB3NRU6DCMADI5H/
[SECURITY] Fedora 35 Update: libdxfrw-1.0.1-1.fc35 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2021/12/msg00002.html
[SECURITY] [DLA 2838-1] librecad security updateMailing List;Third Party Advisory
-
https://security.gentoo.org/glsa/202305-26
LibreCAD: Multiple Vulnerabilities (GLSA 202305-26) — Gentoo security
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