DEBIAN-CVE-2023-34241

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Source
https://security-tracker.debian.org/tracker/CVE-2023-34241
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-34241.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2023-34241
Upstream
Published
2023-06-22T23:15:09Z
Modified
2025-09-19T07:34:52.263207Z
Summary
[none]
Details

OpenPrinting CUPS is a standards-based, open source printing system for Linux and other Unix-like operating systems. Starting in version 2.0.0 and prior to version 2.4.6, CUPS logs data of free memory to the logging service AFTER the connection has been closed, when it should have logged the data right before. This is a use-after-free bug that impacts the entire cupsd process. The exact cause of this issue is the function httpClose(con->http) being called in scheduler/client.c. The problem is that httpClose always, provided its argument is not null, frees the pointer at the end of the call, only for cupsdLogClient to pass the pointer to httpGetHostname. This issue happens in function cupsdAcceptClient if LogLevel is warn or higher and in two scenarios: there is a double-lookup for the IP Address (HostNameLookups Double is set in cupsd.conf) which fails to resolve, or if CUPS is compiled with TCP wrappers and the connection is refused by rules from /etc/hosts.allow and /etc/hosts.deny. Version 2.4.6 has a patch for this issue.

References

Affected packages

Debian:11 / cups

Package

Name
cups
Purl
pkg:deb/debian/cups?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.3.3op2-3+deb11u3

Affected versions

2.*

2.3.3op2-3+deb11u1
2.3.3op2-3+deb11u2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / cups

Package

Name
cups
Purl
pkg:deb/debian/cups?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.2-3+deb12u1

Affected versions

2.*

2.4.2-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / cups

Package

Name
cups
Purl
pkg:deb/debian/cups?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.2-5

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / cups

Package

Name
cups
Purl
pkg:deb/debian/cups?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.2-5

Ecosystem specific 

{
    "urgency": "not yet assigned"
}