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Description

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A vulnerability was found in dnsmasq up to 2.73rc6. Affected by this vulnerability is the function check_servers of the file src/network.c of the component Config File Handler. The manipulation results in null pointer dereference. The attack needs to be approached locally. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

Es wurde eine Schwachstelle in dnsmasq up to 2.73rc6 entdeckt. Das betrifft die Funktion check_servers der Datei src/network.c der Komponente Config File Handler. Dank Manipulation mit unbekannten Daten kann eine null pointer dereference-Schwachstelle ausgenutzt werden. Umgesetzt werden muss der Angriff lokal. Die Ausnutzung wurde veröffentlicht und kann verwendet werden.

PUBLISHED Reserved 2025-10-25 | Published 2025-10-27 | Updated 2025-10-28 | Assigner VulDB




MEDIUM: 4.8CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
LOW: 3.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
LOW: 3.3CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
1.7AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR

Problem types

NULL Pointer Dereference

Denial of Service

Timeline

2025-10-25:Advisory disclosed
2025-10-25:VulDB entry created
2025-10-25:VulDB entry last update

Credits

zh_vul (VulDB User) reporter

References

vuldb.com/?id.329869 (VDB-329869 | dnsmasq Config File network.c check_servers null pointer dereference) vdb-entry technical-description

vuldb.com/?ctiid.329869 (VDB-329869 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.673154 (Submit #673154 | dnsmasq v2.73rc6 NULL Pointer Dereference) third-party-advisory

shimo.im/docs/ZzkLMVMN7vIYJBAQ/ exploit

cve.org (CVE-2025-12199)

nvd.nist.gov (CVE-2025-12199)

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