VulnerabilityModified

CVE-2023-31470

SmartDNS through 41 before 56d0332 allows an out-of-bounds write because of a stack-based buffer overflow in the _dns_encode_domain function in the dns.c file, via a crafted DNS request.

CRITICAL 9.8EPSS 1.12%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.12%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

SmartDNS through 41 before 56d0332 allows an out-of-bounds write because of a stack-based buffer overflow in the _dns_encode_domain function in the dns.c file, via a crafted DNS request.

CVSS 3.1: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 1.12% probability · 64th percentile
CISA KEV: Not listed
Weakness: CWE-787
Affected: pymumu/smartdns
Source: cve@mitre.org

References

https://github.com/pymumu/smartdns/commit/56d0332bf91104cfc877635f6c82e9348587df04Patch
https://github.com/pymumu/smartdns/issues/1378Exploit
https://github.com/pymumu/smartdns/commit/56d0332bf91104cfc877635f6c82e9348587df04Patch
https://github.com/pymumu/smartdns/issues/1378Exploit

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.