Red Hat Security Advisory 2015-1123-01 - CUPS provides a portable printing layer for Linux, UNIX, and similar operating systems. A string reference count bug was found in cupsd, causing premature freeing of string objects. An attacker can submit a malicious print job that exploits this flaw to dismantle ACLs protecting privileged operations, allowing a replacement configuration file to be uploaded which in turn allows the attacker to run arbitrary code in the CUPS server A cross-site scripting flaw was found in the cups web templating engine. An attacker could use this flaw to bypass the default configuration settings that bind the CUPS scheduler to the 'localhost' or loopback interface.
b8be18fe93feda9e83358ade06c07fbf33652b9dedfb62d9a8e3b997ce16a542Mandriva Linux Security Advisory 2015-108 - Cross-site scripting vulnerability in scheduler/client.c in Common Unix Printing System before 1.7.2 allows remote attackers to inject arbitrary web script or HTML via the URL path, related to the is_path_absolute function. In CUPS before 1.7.4, a local user with privileges of group=lp can write symbolic links in the rss directory and use that to gain '@SYSTEM' group privilege with cupsd. It was discovered that the web interface in CUPS incorrectly validated permissions on rss files and directory index files. A local attacker could possibly use this issue to bypass file permissions and read arbitrary files, possibly leading to a privilege escalation. A malformed file with an invalid page header and compressed raster data can trigger a buffer overflow in cupsRasterReadPixels.
029c517fb2aafd25bf90e98f07319e0f00c7a6d282bf8e64661bb76a2f70f6a8Mandriva Linux Security Advisory 2015-049 - A malformed file with an invalid page header and compressed raster data can trigger a buffer overflow in cupsRasterReadPixels.
4e612da94a75e94c7020c6ebba6df495936f1935a1e11297c6fb9e1c656627dcUbuntu Security Notice 2520-1 - Peter De Wachter discovered that CUPS incorrectly handled certain malformed compressed raster files. A remote attacker could use this issue to cause CUPS to crash, resulting in a denial of service, or possibly execute arbitrary code.
3f5f2c63b03a2f9dbe4401968467d5532e3781909850a2839166ccf5352b25efDebian Linux Security Advisory 3172-1 - Peter De Wachter discovered that CUPS, the Common UNIX Printing System, did not correctly parse compressed raster files. By submitting a specially crafted raster file, a remote attacker could use this vulnerability to trigger a buffer overflow.
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