Buffer overflow in D-Link Dir-822 Firmware
CVE-2019-6258
D-Link DIR-822 Rev.Bx devices with firmware v.202KRb06 and older allow a buffer overflow via long MacAddress data in a /HNAP1/SetClientInfo HNAP protocol message, which is mishandled in /usr/sbin/udhcpd during reading of the /var/servd/LAN-1-udhcpd.conf file.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.026 (84.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 84.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.026 · newest: 0.026 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/pr0v3rbs/CVE/tree/master/CVE-2019-6258 (Exploit, Third Party Advisory)
- supportannouncement.us.dlink.com/announcement/publication.aspx (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2019-6258?
- CVE-2019-6258 is a critical-severity vulnerability in D-Link Dir-822 Firmware, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2020-08-18.
- How severe is CVE-2019-6258?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2019-6258 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.