Vulnerability Details : CVE-2021-42379
A use-after-free in Busybox's awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in the next_input_file function
Vulnerability category: Memory CorruptionDenial of service
Threat overview for CVE-2021-42379
Top countries where our scanners detected CVE-2021-42379
Top open port discovered on systems with this issue
443
IPs affected by CVE-2021-42379 354,970
Threat actors abusing to this issue?
Yes
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Exploit prediction scoring system (EPSS) score for CVE-2021-42379
Probability of exploitation activity in the next 30 days: 0.24%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 62 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-42379
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Source |
---|---|---|---|---|---|
6.5
|
MEDIUM | AV:N/AC:L/Au:S/C:P/I:P/A:P |
8.0
|
6.4
|
nvd@nist.gov |
7.2
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
1.2
|
5.9
|
nvd@nist.gov |
CWE ids for CVE-2021-42379
-
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.Assigned by:
- nvd@nist.gov (Primary)
- reefs@jfrog.com (Secondary)
References for CVE-2021-42379
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UQXGOGWBIYWOIVXJVRKHZR34UMEHQBXS/
[SECURITY] Fedora 33 Update: busybox-1.34.1-1.fc33 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://security.netapp.com/advisory/ntap-20211223-0002/
November 2021 BusyBox Vulnerabilities in NetApp Products | NetApp Product SecurityThird Party Advisory
-
https://claroty.com/team82/research/unboxing-busybox-14-vulnerabilities-uncovered-by-claroty-jfrog
Unboxing BusyBox: 14 Vulnerabilities Uncovered by Claroty, JFrog | Claroty
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6T2TURBYYJGBMQTTN2DSOAIQGP7WCPGV/
[SECURITY] Fedora 34 Update: busybox-1.34.1-1.fc34 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://jfrog.com/blog/unboxing-busybox-14-new-vulnerabilities-uncovered-by-claroty-and-jfrog/
Unboxing BusyBox - 14 new vulnerabilities uncovered by Claroty and JFrog | JFrogThird Party Advisory
Products affected by CVE-2021-42379
- cpe:2.3:a:busybox:busybox:*:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*