Vulnerability Details : CVE-2021-40391
An out-of-bounds write vulnerability exists in the drill format T-code tool number functionality of Gerbv 2.7.0, dev (commit b5f1eacd), and the forked version of Gerbv (commit 71493260). A specially-crafted drill file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.
Vulnerability category: Memory Corruption
Exploit prediction scoring system (EPSS) score for CVE-2021-40391
Probability of exploitation activity in the next 30 days: 0.45%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 74 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-40391
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST |
|
10.0
|
CRITICAL | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
3.9
|
6.0
|
Talos |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2021-40391
-
The product detects a specific error, but takes no actions to handle the error.Assigned by: talos-cna@cisco.com (Secondary)
-
The product does not handle or incorrectly handles an exceptional condition.Assigned by: nvd@nist.gov (Primary)
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-40391
-
https://www.talosintelligence.com/vulnerability_reports/TALOS-2021-1402
TALOS-2021-1402 || Cisco Talos Intelligence Group - Comprehensive Threat IntelligenceExploit;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TUM5GIUZJ7AVHVCXDZW6ZVCAPV2ISN47/
[SECURITY] Fedora 36 Update: gerbv-2.9.2-1.fc36 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2021/12/msg00003.html
[SECURITY] [DLA 2839-1] gerbv security updateMailing List;Third Party Advisory
Products affected by CVE-2021-40391
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
- cpe:2.3:a:gerbv_project:gerbv:2.7.0:-:*:*:*:*:*:*
- cpe:2.3:a:gerbv_project:gerbv:2.7.0:dev:*:*:*:*:*:*
- cpe:2.3:a:gerbv_project:gerbv:2.7.0:forked_dev:*:*:*:*:*:*