CVE-2018-5732
high
CVSS v3
—
CVSS v2
—
VIR risk
8.0
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
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2018-5732
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2018-5732.html
Vendor advisory: arch — https://security.archlinux.org/ASA-201803-3
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 4.4.1-1 | |
| sles | affected | | |
| debian | bookworm | fixed | 4.3.5-3.1 |
| debian | bullseye | fixed | 4.3.5-3.1 |
| debian | sid | fixed | 4.3.5-3.1 |
| debian | trixie | fixed | 4.3.5-3.1 |
References
Verify integrity in audit chain (admin only). AS-IS.