This update include a fix for improper reference counting in abstract file descriptors handling interface (CVE-2009-3553), and for a memory leak in the LSPP support.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update addresses a denial of service security issue (CVE-2010-0302) as well as fixing several other small problems: * classes.conf is now updated when a class member is deleted. * the usermode dependency has been removed. * the udev rules are now installed in the correct location. * cups-config now has no multilib conflict. * the ipp backend now clears the printer status on completion. * cupsGetNamedDest() is no longer confused by old configuration files. * the scheduler no longer treats SIGPIPE as a filter error. * the gcrypt threading patch has been reverted. * the package no longer owns filesystem-owned directories.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Updated cups packages that fix multiple security issues are now available for Red Hat Enterprise Linux 5.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

[Updated 12th January 2010] The packages list in this erratum has been updated to include missing i386 packages for Red Hat Enterprise Linux Desktop and RHEL Desktop Workstation.

The Common UNIX Printing System (CUPS) provides a portable printing layer for UNIX operating systems.

A use-after-free flaw was found in the way CUPS handled references in its file descriptors-handling interface. A remote attacker could, in a specially crafted way, query for the list of current print jobs for a specific printer, leading to a denial of service (cupsd crash).
(CVE-2009-3553)

Several cross-site scripting (XSS) flaws were found in the way the CUPS web server interface processed HTML form content. If a remote attacker could trick a local user who is logged into the CUPS web interface into visiting a specially crafted HTML page, the attacker could retrieve and potentially modify confidential CUPS administration data. (CVE-2009-2820)

Red Hat would like to thank Aaron Sigel of Apple Product Security for responsibly reporting the CVE-2009-2820 issue.

Users of cups are advised to upgrade to these updated packages, which contain backported patches to correct these issues. After installing the update, the cupsd daemon will be restarted automatically.

lppasswd when running setuid or setgid still honors environment variables that specify the location of message files. Local attackers could exploit that to gather information by using crafted format strings (CVE-2010-0393).

The previous fix for a use-after-free vulnerability (CVE-2009-3553) was incomplete (CVE-2010-0302).

According to its banner, the version of CUPS installed on the remote host is earlier than 1.4.3. Such versions are affected by several vulnerabilities :

  - A pointer use-after-free vulnerability exists in the     abstract file descriptor handling code in the     'cupsdDoSelect' function in scheduler/select.c. A remote     attacker may be able to leverage this to hang or crash     the cupsd daemon by disconnecting while receiving a     listing with a large number of print jobs. (STR #3200)

  - The lppasswd utility, when its setuid bit is enabled,     allowing a local user to elevaate privileges because it     uses an environment variable to override CUPS' default     directories and determine the location of a file with     localized message strings. (STR #3482)

The remote NewStart CGSL host, running version MAIN 6.06, has cups packages installed that are affected by multiple vulnerabilities:

  - ipp.c in cupsd in CUPS 1.4.4 and earlier does not properly allocate memory for attribute values with     invalid string data types, which allows remote attackers to cause a denial of service (use-after-free and     application crash) or possibly execute arbitrary code via a crafted IPP request. (CVE-2010-2941)

  - The Hewlett-Packard Graphics Language (HPGL) filter in CUPS before 1.3.9 allows remote attackers to     execute arbitrary code via crafted pen width and pen color opcodes that overwrite arbitrary memory.
    (CVE-2008-3641)

  - Xpdf, as used in products such as gpdf, kpdf, pdftohtml, poppler, teTeX, CUPS, libextractor, and others,     allows attackers to cause a denial of service (infinite loop) via streams that end prematurely, as     demonstrated using the (1) CCITTFaxDecode and (2) DCTDecode streams, aka Infinite CPU spins.
    (CVE-2005-3625)

  - Xpdf, as used in products such as gpdf, kpdf, pdftohtml, poppler, teTeX, CUPS, libextractor, and others,     allows attackers to cause a denial of service (crash) via a crafted FlateDecode stream that triggers a     null dereference. (CVE-2005-3626)

  - Stream.cc in Xpdf, as used in products such as gpdf, kpdf, pdftohtml, poppler, teTeX, CUPS, libextractor,     and others, allows attackers to modify memory and possibly execute arbitrary code via a DCTDecode stream     with (1) a large number of components value that is not checked by DCTStream::readBaselineSOF or     DCTStream::readProgressiveSOF, (2) a large Huffman table index value that is not checked by     DCTStream::readHuffmanTables, and (3) certain uses of the scanInfo.numComps value by     DCTStream::readScanInfo. (CVE-2005-3627)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to its banner, the version of CUPS installed on the remote host is earlier than 1.4.3.  Such versions are affected by several vulnerabilities : 

  - A pointer use-after-free vulnerability exists in the abstract file descriptor handling code in the 'cupsdDoSelect' function in scheduler/select.c.  A remote attacker may be able to leverage this to hang or crash the cupsd daemon by disconnecting while receiving a listing with a large number of print jobs. (STR #3200)

  - The lppasswd utility, when its setuid bit is enabled, allows a local user to escalate his or her privileges because it uses an environment variable to override CUPS' default directories and determine the location of a file with localized message strings. (STR #3482)

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
43009	Fedora 10 : cups-1.3.11-4.fc10 (2009-12652)	Nessus	Fedora Local Security Checks	2009/12/7	2021/1/11	medium
47327	Fedora 12 : cups-1.4.2-28.fc12 (2010-3761)	Nessus	Fedora Local Security Checks	2010/7/1	2021/1/11	medium
67076	CentOS 5 : cups (CESA-2009:1595)	Nessus	CentOS Local Security Checks	2013/6/29	2021/1/4	medium
45096	openSUSE Security Update : cups (cups-2102)	Nessus	SuSE Local Security Checks	2010/3/19	2021/1/14	medium
45554	CUPS < 1.4.3 Multiple Vulnerabilities	Nessus	Misc.	2010/4/16	2018/7/6	high
266283	NewStart CGSL MAIN 6.06 : cups Multiple Vulnerabilities (NS-SA-2025-0218)	Nessus	NewStart CGSL Local Security Checks	2025/9/30	2025/9/30	critical
5512	CUPS < 1.4.3 Multiple Vulnerabilities	Nessus Network Monitor	Web Servers	2010/4/19	2019/3/6	high

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