Vulnerability Details : CVE-2022-0934
A single-byte, non-arbitrary write/use-after-free flaw was found in dnsmasq. This flaw allows an attacker who sends a crafted packet processed by dnsmasq, potentially causing a denial of service.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2022-0934
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:thekelleys:dnsmasq:*:*:*:*:*:*:*:*
Threat overview for CVE-2022-0934
Top countries where our scanners detected CVE-2022-0934
Top open port discovered on systems with this issue
53
IPs affected by CVE-2022-0934 830,305
Threat actors abusing to this issue?
Yes
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affected by CVE-2022-0934!
*Directly or indirectly through your vendors, service providers and 3rd parties.
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Exploit prediction scoring system (EPSS) score for CVE-2022-0934
0.22%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 60 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-0934
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2022-0934
-
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by:
- nvd@nist.gov (Secondary)
- secalert@redhat.com (Primary)
References for CVE-2022-0934
-
https://bugzilla.redhat.com/show_bug.cgi?id=2057075
2057075 – (CVE-2022-0934) CVE-2022-0934 dnsmasq: Heap use after free in dhcp6_no_relayIssue Tracking;Patch;Third Party Advisory
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https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016272.html
[Dnsmasq-discuss] [PATCH] Heap use after free in dhcp6_no_relay (CVE-2022-0934)Mailing List;Vendor Advisory
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https://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=03345ecefeb0d82e3c3a4c28f27c3554f0611b39
thekelleys.org.uk GitBroken Link
-
https://access.redhat.com/security/cve/CVE-2022-0934
CVE-2022-0934- Red Hat Customer PortalThird Party Advisory
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