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Vulnerability · Published Apr 4, 2023 · Assigned by mitre

CVE-2023-29323

High 7.8

In plain English

A high-severity security flaw in the opensmtpd package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)7.8High
Exploit odds (30 days)0.3%top 79.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

ascii_load_sockaddr in smtpd in OpenBSD before 7.1 errata 024 and 7.2 before errata 020, and OpenSMTPD Portable before 7.0.0-portable commit f748277, can abort upon a connection from a local, scoped IPv6 address.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12opensmtpdno fix listedDEBIAN-CVE-2023-29323
Debian:13opensmtpd7.3.0p1-1DEBIAN-CVE-2023-29323
Debian:14opensmtpd7.3.0p1-1DEBIAN-CVE-2023-29323
Ubuntu:22.04:LTSopensmtpdno fix listedUBUNTU-CVE-2023-29323
Ubuntu:24.04:LTSopensmtpdno fix listedUBUNTU-CVE-2023-29323
Ubuntu:25.10opensmtpdno fix listedUBUNTU-CVE-2023-29323
Ubuntu:26.04:LTSopensmtpdno fix listedUBUNTU-CVE-2023-29323
Ubuntu:26.10opensmtpdno fix listedUBUNTU-CVE-2023-29323

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

References