CVE-2018-5732

CWE-119 — Buffer Overflow10 documents8 sources
Severity
7.5HIGH
EPSS
3.6%
top 12.15%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
ISC DhcpISC ISC Dhcp
Timeline
PublishedOct 9
Latest updateMay 24

Description

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 4.1.0 -> 4.1-ESV-R15, 4.2.0 -> 4.2.8, 4.3.0 -> 4.3.6, 4.4.0

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages3 packages

▶NVDisc/dhcp4.2.0 — 4.2.8+5
▶Debianisc-dhcp< 4.3.5-3.1+2
▶CVEListV5isc/isc_dhcpISC DHCP 4.1.0 -> 4.1-ESV-R15, 4.2.0 -> 4.2.8, 4.3.0 -> 4.3.6, 4.4.0

🔴Vulnerability Details

3
GHSA
GHSA-j4cm-vph7-f7qg: 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↗2022-05-24
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OSV
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↗2019-10-09
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CVEList
A specially constructed response from a malicious server can cause a buffer overflow in dhclient↗2019-10-09
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📋Vendor Advisories

4
Ubuntu
DHCP vulnerabilities↗2018-05-28
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Ubuntu
DHCP vulnerabilities↗2018-03-01
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Red Hat
dhcp: Buffer overflow in dhclient possibly allowing code execution triggered by malicious server↗2018-02-28
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Debian
CVE-2018-5732: isc-dhcp - Failure to properly bounds-check a buffer used for processing DHCP options allow...↗2018
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💬Community

2
Bugzilla
CVE-2018-5732 CVE-2018-5733 dhcp: various flaws [fedora-all]↗2018-02-28
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Bugzilla
CVE-2018-5732 dhcp: Buffer overflow in dhclient possibly allowing code execution triggered by malicious server↗2018-02-28
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