EUVD-2026-26350

The BOOTP file field is written to the lease file without escaping embedded double-quotes, allowing injection of arbitrary dhclient.conf directives. When the lease file is subsequently re-parsed by dhclient, e.g., after a system restart, an attacker-controlled field from the lease is passed to...

CVE-2026-42511

The BOOTP file field is written to the lease file without escaping embedded double-quotes, allowing injection of arbitrary dhclient.conf directives. When the lease file is subsequently re-parsed by dhclient, e.g., after a system restart, an attacker-controlled field from the lease is passed to...

FreeBSD 安全漏洞

FreeBSD is a Unix-like operating system developed by the FreeBSD Foundation. There is a security vulnerability in FreeBSD, which stems from the BOOTP file field not properly escaping double quotes when writing the lease file. This allows arbitrary dhclient.conf commands to be injected, potentiall...

FreeBSD : FreeBSD -- Remotely triggerable out-of-bounds heap write in dhclient (58acf4c5-4435-11f1-bb07-bc241121aa0a)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 58acf4c5-4435-11f1-bb07-bc241121aa0a advisory. As dhclient is building an environment to pass to dhclient-script, it may need to resize the array of...

FreeBSD : FreeBSD -- Remote code execution via malicious DHCP options (9eb2533e-4434-11f1-bb07-bc241121aa0a)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 9eb2533e-4434-11f1-bb07-bc241121aa0a advisory. The BOOTP file field is written to the lease file without escaping embedded double-quotes, allowing...

FreeBSD Security Advisory - FreeBSD-SA-26:12.dhclient

FreeBSD Security Advisory - The BOOTP file field is written to the lease file without escaping embedded double-quotes, allowing injection of arbitrary dhclient.conf directives. When the lease file is subsequently re-parsed by dhclient, e.g., after a system restart, an attacker-controlled field fr...

FreeBSD-SA-26:12.dhclient

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-26:12.dhclient Security Advisory The FreeBSD Project Topic: Remote code execution via malicious DHCP options Category: core Module: dhclient Announced:...

FreeBSD Security Advisory - FreeBSD-SA-26:15.dhclient

FreeBSD Security Advisory - As dhclient is building an environment to pass to dhclient-script, it may need to resize the array of string pointers. The code which expands the array incorrectly calculates its new size when requesting memory, resulting in a heap buffer overrun...

FreeBSD -- Remote code execution via malicious DHCP options

Problem Description: The BOOTP file field is written to the lease file without escaping embedded double-quotes, allowing injection of arbitrary dhclient.conf directives. When the lease file is subsequently re-parsed by dhclient, e.g., after a system restart, an attacker-controlled field from the...

FreeBSD-SA-26:15.dhclient

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-26:15.dhclient Security Advisory The FreeBSD Project Topic: Remotely triggerable out-of-bounds heap write in dhclient Category: core Module: dhclient Announced:...

FreeBSD -- Remotely triggerable out-of-bounds heap write in dhclient

Problem Description: As dhclient is building an environment to pass to dhclient-script, it may need to resize the array of string pointers. The code which expands the array incorrectly calculates its new size when requesting memory, resulting in a heap buffer overrun. Impact: A specially crafted...

MiracleLinux 8 : dhcp-4.3.6-44.el8.1 (AXSA:2021-2197:04)

The remote MiracleLinux 8 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2021-2197:04 advisory. dhcp: stack-based buffer overflow when parsing statements with colon-separated hex digits in config or lease files in dhcpd and dhclient CVE-2021-25217 Tenab...

MiracleLinux 4 : dhcp-4.1.1-63.P1.0.2.AXS4 (AXSA:2021-2027:03)

The remote MiracleLinux 4 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2021-2027:03 advisory. dhcp: stack-based buffer overflow when parsing statements with colon-separated hex digits in config or lease files in dhcpd and dhclient CVE-2021-25217 Tenab...

MiracleLinux 4 : dhcp-4.1.1-19.P1.AXS4.1 (AXSA:2011-427:03)

The remote MiracleLinux 4 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2011-427:03 advisory. DHCP Dynamic Host Configuration Protocol is a protocol which allows individual devices on an IP network to get their own network configuration...

EUVD-2012-2241

Malware in sbrugna...

EUVD-2018-17501

Malware in sbrugna...

Siemens DHCP Improper Restriction of Operations within the Bounds of a Memory Buffer (CVE-2021-25217)

In ISC DHCP 4.1-ESV-R1 - 4.1-ESV-R16, ISC DHCP 4.4.0 - 4.4.2 Other branches of ISC DHCP i.e., releases in the 4.0.x series or lower and releases in the 4.3.x series are beyond their End-of-Life EOL and no longer supported by ISC. From inspection it is clear that the defect is also present in...

SUSE CVE-2009-0692

Stack-based buffer overflow in the scriptwriteparams method in client/dhclient.c in ISC DHCP dhclient 4.1 before 4.1.0p1, 4.0 before 4.0.1p1, 3.1 before 3.1.2p1, 3.0, and 2.0 allows remote DHCP servers to execute arbitrary code via a crafted subnet-mask option...

SUSE CVE-2011-0997

dhclient in ISC DHCP 3.0.x through 4.2.x before 4.2.1-P1, 3.1-ESV before 3.1-ESV-R1, and 4.1-ESV before 4.1-ESV-R2 allows remote attackers to execute arbitrary commands via shell metacharacters in a hostname obtained from a DHCP message, as demonstrated by a hostname that is provided to...

SUSE CVE-2018-5732

Failure to properly bounds-check a buffer used for processing DHCP options allows a malicious server or an entity masquerading as a server to cause a buffer overflow and resulting crash in dhclient by sending a response containing a specially constructed options section. Affects ISC DHCP versions...