A use-after-free flaw was found in the way the CUPS server parsed Internet Printing Protocol (IPP) packets. A malicious user able to send IPP requests to the CUPS server could use this flaw to crash the CUPS server or, potentially, execute arbitrary code with the privileges of the CUPS server. (CVE-2010-2941)

A possible privilege escalation flaw was found in CUPS. An unprivileged process running as the 'lp' user (such as a compromised external filter program spawned by the CUPS server) could trick the CUPS server into overwriting arbitrary files as the root user.
(CVE-2010-2431)

After installing this update, the cupsd daemon will be restarted automatically.

This update fixes the following security issues :

  - 601830: CSRF via admin web interface. (CVE-2010-0540)

  - 680210: users in group 'lp' can overwrite arbitrary     files. (CVE-2010-2431)

  - 680212: denial of service via cupsDoAuthentication.
    (CVE-2010-2432)

  - 711490: heap overflow in gif decoder. (CVE-2011-2896)

  - 715643: heap overflow in gif decoder (CVE-2011-3170)

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

The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

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 the CUPS server parsed Internet Printing Protocol (IPP) packets. A malicious user able to send IPP requests to the CUPS server could use this flaw to crash the CUPS server or, potentially, execute arbitrary code with the privileges of the CUPS server. (CVE-2010-2941)

A possible privilege escalation flaw was found in CUPS. An unprivileged process running as the 'lp' user (such as a compromised external filter program spawned by the CUPS server) could trick the CUPS server into overwriting arbitrary files as the root user.
(CVE-2010-2431)

Red Hat would like to thank Emmanuel Bouillon of NATO C3 Agency for reporting the CVE-2010-2941 issue.

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

This update fixes the following security issues :

  - 601830: CSRF via admin web interface. (CVE-2010-0540)

  - 680210: users in group 'lp' can overwrite arbitrary     files. (CVE-2010-2431)

  - 711490: heap overflow in gif decoder. (CVE-2011-2896)

  - 715643: heap overflow in gif decoder (CVE-2011-3170)     This update also fixes the following non-security issues :

  - 671735: CUPS backends do not clear messages like     'Waiting for printer to finish...'

The remote host is affected by the vulnerability described in GLSA-201207-10 (CUPS: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in CUPS. Please review the       CVE identifiers referenced below for details.
  Impact :

    A remote attacker may be able to execute arbitrary code using specially       crafted streams, IPP requests or files, or cause a Denial of Service       (daemon crash or hang). A local attacker may be able to gain escalated       privileges or overwrite arbitrary files. Furthermore, a remote attacker       may be able to obtain sensitive information from the CUPS process or       hijack a CUPS administrator authentication request.
  Workaround :

    There is no known workaround at this time.

From Red Hat Security Advisory 2010:0811 :

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

The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

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 the CUPS server parsed Internet Printing Protocol (IPP) packets. A malicious user able to send IPP requests to the CUPS server could use this flaw to crash the CUPS server or, potentially, execute arbitrary code with the privileges of the CUPS server. (CVE-2010-2941)

A possible privilege escalation flaw was found in CUPS. An unprivileged process running as the 'lp' user (such as a compromised external filter program spawned by the CUPS server) could trick the CUPS server into overwriting arbitrary files as the root user.
(CVE-2010-2431)

Red Hat would like to thank Emmanuel Bouillon of NATO C3 Agency for reporting the CVE-2010-2941 issue.

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

Several vulnerabilities have been discovered in the Common UNIX Printing System :

  - CVE-2008-5183     A NULL pointer dereference in RSS job completion     notifications could lead to denial of service.

  - CVE-2009-3553     It was discovered that incorrect file descriptor     handling could lead to denial of service.

  - CVE-2010-0540     A cross-site request forgery vulnerability was     discovered in the web interface.

  - CVE-2010-0542     Incorrect memory management in the filter subsystem     could lead to denial of service.

  - CVE-2010-1748     Information disclosure in the web interface.

  - CVE-2010-2431     Emmanuel Bouillon discovered a symlink vulnerability in     handling of cache files.

  - CVE-2010-2432     Denial of service in the authentication code.

  - CVE-2010-2941     Incorrect memory management in the IPP code could lead     to denial of service or the execution of arbitrary code.

Multiple vulnerabilities were discovered and corrected in cups :

Cross-site request forgery (CSRF) vulnerability in the web interface in CUPS, allows remote attackers to hijack the authentication of administrators for requests that change settings (CVE-2010-0540).

The _WriteProlog function in texttops.c in texttops in the Text Filter subsystem in CUPS before 1.4.4 does not check the return values of certain calloc calls, which allows remote attackers to cause a denial of service (NULL pointer dereference or heap memory corruption) or possibly execute arbitrary code via a crafted file (CVE-2010-0542).

The web interface in CUPS, reads uninitialized memory during handling of form variables, which allows context-dependent attackers to obtain sensitive information from cupsd process memory via unspecified vectors (CVE-2010-1748).

The cupsFileOpen function in CUPS before 1.4.4 allows local users, with lp group membership, to overwrite arbitrary files via a symlink attack on the (1) /var/cache/cups/remote.cache or (2) /var/cache/cups/job.cache file (CVE-2010-2431).

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).

Packages for 2009.0 are provided as of the Extended Maintenance Program. Please visit this link to learn more:
http://store.mandriva.com/product_info.php?cPath=149&amp;products_id=4 90

The updated packages have been patched to correct these issues.

According to its banner, the version of CUPS installed on the remote host is earlier than 1.4.4. Such versions are affected by several vulnerabilities :

  - The patch for STR #3200 / CVE-2009-3553 was not     complete. A remote client can cause a denial of service     by causing the CUPS server to reference an already     freed resource. (STR #3490) (CVE-2010-0302)

  - The CUPS daemon may be vulnerable to certain cross-site     request forgery (CSRF) attacks, e.g., malicious IFRAME     attacks. (STR #3498) (CVE-2010-0540)

  - An unprivileged process may be able to cause the CUPS     server to overwrite arbitrary files as the root user.
    (STR #3510) (CVE-2010-2431)

  - The CUPS daemon is vulnerable to a heap corruption     attack as the 'textops' filter does not verify the     results of memory allocations. It is possible this     may lead to arbitrary code execution. (STR #3516)     (CVE-2010-0542)

  - The CUPS daemon is vulnerable to a denial of service     attack if compiled without HAVE_GSSAPI. (STR #3518)     (CVE-2010-2432)

  - The CUPS daemon is vulnerable to an information     disclosure attack as an attacker can view portions of     uninitialized memory by a specially crafted URL.
    (STR #3577) (CVE-2010-1748)

The remote host is running CUPS, an open source print server. 

Versions of CUPS earlier than 1.4.4 are potentially affected by multiple vulnerabilities.

  - The texttops filter does not check the results of memory allocations. (STR #3715)

  - A use-after-free vulnerability in the abstract file-descriptor handling interface.  Note that this is related to an incomplete patch for CVE-2009-3553. (STR #3490)

  - In certain instances, the web interface can disclose the contents of memory. (STR #3577)

  - CUPS can overwrite files as root in directories not owned or writeable by non-root users. (STR #3510)

  - An infinite loop can occur when CUPS is not compiled with HAVE_GSSAPI. (STR #3518)

ID	Name	Product	Family	Published	Updated	Severity
60881	Scientific Linux Security Update : cups on SL5.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	8/1/2012	1/14/2021	high
57094	SuSE 11.1 Security Update : CUPS (SAT Patch Number 5180)	Nessus	SuSE Local Security Checks	12/13/2011	1/19/2021	medium
50802	CentOS 5 : cups (CESA-2010:0811)	Nessus	CentOS Local Security Checks	11/24/2010	1/4/2021	high
57172	SuSE 10 Security Update : CUPS (ZYPP Patch Number 7775)	Nessus	SuSE Local Security Checks	12/13/2011	1/19/2021	medium
59902	GLSA-201207-10 : CUPS: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	7/10/2012	1/6/2021	high
68130	Oracle Linux 5 : cups (ELSA-2010-0811)	Nessus	Oracle Linux Local Security Checks	7/12/2013	1/14/2021	high
50407	RHEL 5 : cups (RHSA-2010:0811)	Nessus	Red Hat Local Security Checks	10/29/2010	1/14/2021	high
56603	SuSE 10 Security Update : CUPS (ZYPP Patch Number 7774)	Nessus	SuSE Local Security Checks	10/24/2011	1/19/2021	medium
52484	Debian DSA-2176-1 : cups - several vulnerabilities	Nessus	Debian Local Security Checks	3/2/2011	1/4/2021	high
50606	Mandriva Linux Security Advisory : cups (MDVSA-2010:232)	Nessus	Mandriva Local Security Checks	11/16/2010	1/6/2021	high
47683	CUPS < 1.4.4 Multiple Vulnerabilities	Nessus	Misc.	7/8/2010	7/6/2018	high
5574	CUPS < 1.4.4 Multiple Vulnerabilities	Nessus Network Monitor	Web Servers	6/18/2010	3/6/2019	medium

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