An issue was discovered in BusyBox before 1.30.0. An out of bounds read in udhcp components (consumed by the DHCP server, client, and relay) allows a remote attacker to leak sensitive information from the stack by sending a crafted DHCP message. This is related to verification in udhcp_get_option() in networking/udhcp/common.c that 4-byte options are indeed 4 bytes.
Published 2019-01-09 16:29:00
Updated 2019-09-04 23:15:13
Source MITRE
View at NVD,   CVE.org

Threat overview for CVE-2018-20679

Top countries where our scanners detected CVE-2018-20679
Top open port discovered on systems with this issue 8602
IPs affected by CVE-2018-20679 672,696
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2018-20679!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2018-20679

Probability of exploitation activity in the next 30 days: 0.56%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 75 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2018-20679

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source
5.0
MEDIUM AV:N/AC:L/Au:N/C:P/I:N/A:N
10.0
2.9
NIST
7.5
HIGH CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
3.9
3.6
NIST

CWE ids for CVE-2018-20679

  • The product reads data past the end, or before the beginning, of the intended buffer.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2018-20679

Products affected by CVE-2018-20679

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