Bug 2184676 (CVE-2023-29323)

Summary: CVE-2023-29323 opensmtpd: ascii_load_sockaddr can abort upon a connection from a local scoped IPv6 address
Product: [Other] Security Response Reporter: Pedro Sampaio <psampaio>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED UPSTREAM QA Contact:
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Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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Last Closed: 2023-04-05 17:05:03 UTC Type: ---
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Bug Depends On: 2184677, 2184678    
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Description Pedro Sampaio 2023-04-05 12:05:31 UTC 
ascii_load_sockaddr in smtpd in OpenBSD before 7.1 errata 024 and 7.2 before errata 020, and OpenSMTPD Portable through 7.0.0-portable, can abort upon a connection from a local, scoped IPv6 address.

https://ftp.openbsd.org/pub/OpenBSD/patches/7.2/common/020_smtpd.patch.sig
https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.sbin/smtpd/envelope.c.diff?r1=1.50&r2=1.51&f=h
https://ftp.openbsd.org/pub/OpenBSD/patches/7.1/common/024_smtpd.patch.sig
https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.sbin/smtpd/envelope.c.diff?r1=1.50&r2=1.50.4.1&f=h
https://github.com/OpenSMTPD/OpenSMTPD/commit/41d0eae481f538956b1f1fbadfb535043454061f
https://github.com/OpenSMTPD/OpenSMTPD/blob/41d0eae481f538956b1f1fbadfb535043454061f/usr.sbin/smtpd/envelope.c#L280
https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.sbin/smtpd/envelope.c.diff?r1=1.49&r2=1.49.4.1&f=h
Comment 1 Pedro Sampaio 2023-04-05 12:05:49 UTC 
Created opensmtpd tracking bugs for this issue:

Affects: epel-all [bug 2184678]
Affects: fedora-all [bug 2184677]
Comment 2 Product Security DevOps Team 2023-04-05 17:05:02 UTC 
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.