CVE-2023-34241

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
Link Resource
http://www.openwall.com/lists/oss-security/2023/06/23/10 Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2023/06/26/1 Mailing List Third Party Advisory
https://github.com/OpenPrinting/cups/commit/9809947a959e18409dcf562a3466ef246cb90cb2 Patch
https://github.com/OpenPrinting/cups/releases/tag/v2.4.6 Release Notes
https://github.com/OpenPrinting/cups/security/advisories/GHSA-qjgh-5hcq-5f25 Exploit Patch Vendor Advisory
https://lists.debian.org/debian-lts-announce/2023/06/msg00038.html Mailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7I7DWGYGEMBNLZF5UQBMF3SONR37YUBN/ Mailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TBIYKDS3UG3W4Z7YOHTR2AWFNBRYPNYY/ Mailing List Third Party Advisory
https://support.apple.com/kb/HT213843 Third Party Advisory
https://support.apple.com/kb/HT213844 Third Party Advisory
https://support.apple.com/kb/HT213845 Third Party Advisory
http://www.openwall.com/lists/oss-security/2023/06/23/10 Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2023/06/26/1 Mailing List Third Party Advisory
https://github.com/OpenPrinting/cups/commit/9809947a959e18409dcf562a3466ef246cb90cb2 Patch
https://github.com/OpenPrinting/cups/releases/tag/v2.4.6 Release Notes
https://github.com/OpenPrinting/cups/security/advisories/GHSA-qjgh-5hcq-5f25 Exploit Patch Vendor Advisory
https://lists.debian.org/debian-lts-announce/2023/06/msg00038.html Mailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7I7DWGYGEMBNLZF5UQBMF3SONR37YUBN/ Mailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TBIYKDS3UG3W4Z7YOHTR2AWFNBRYPNYY/ Mailing List Third Party Advisory
https://support.apple.com/kb/HT213843 Third Party Advisory
https://support.apple.com/kb/HT213844 Third Party Advisory
https://support.apple.com/kb/HT213845 Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:openprinting:cups:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*

Configuration 3 (hide)

cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

Configuration 4 (hide)

OR cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2023-06-22 23:15

Updated : 2024-11-21 08:06


NVD link : CVE-2023-34241

Mitre link : CVE-2023-34241

CVE.ORG link : CVE-2023-34241


JSON object : View

Products Affected

openprinting

  • cups

apple

  • macos

debian

  • debian_linux

fedoraproject

  • fedora
CWE
CWE-416

Use After Free